{"items":[{"id":"NVI-00003710","kind":"vulnerability","title":"PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-q9jv-mm3r-j47r","CVE-2024-56412"],"plain_summary":"OSV carries this publisher advisory for phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpexcel. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 3.7.0 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 1.29.7 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.1.6 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.3.5 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-5b24ef0a381f8b8024a2a6fbdc3a2727"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-17T08:12:09.637Z","value":"5.4 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-b2a30fc76ea11472e4b8db0aabc8bf6b"},{"kind":"CVSS","as_of":"2026-06-17T08:12:09.637Z","value":"4.8 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-b2a30fc76ea11472e4b8db0aabc8bf6b"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.390%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.332. Missing scores are unknown.","source_id":"sr-5b24ef0a381f8b8024a2a6fbdc3a2727"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-481acf0152e4f7b6d397f0ac561f8ccb","url":"https://github.com/advisories/GHSA-q9jv-mm3r-j47r","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-q9jv-mm3r-j47r","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:31.001Z"},{"id":"sr-b2a30fc76ea11472e4b8db0aabc8bf6b","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56412","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2024-56412","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T00:59:51.327Z"},{"id":"sr-5b24ef0a381f8b8024a2a6fbdc3a2727","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2024-56412","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.369Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 3.0.0; fixed 3.7.0"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.29.7"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.1.6"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 2.2.0; fixed 2.3.5"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpexcel","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 1.8.2"]}],"null_published_at":"2026-11-06T15:18:17.686Z","source_updated_at":"2025-03-06T18:38:10.072Z","source_disclosed_at":"2025-01-03T17:29:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:31.001Z"},{"id":"NVI-00003710","kind":"vulnerability","title":"PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-q9jv-mm3r-j47r","CVE-2024-56412"],"plain_summary":"OSV carries this publisher advisory for phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpexcel. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 3.7.0 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 1.29.7 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.1.6 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.3.5 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-5b24ef0a381f8b8024a2a6fbdc3a2727"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.390%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.332. Missing scores are unknown.","source_id":"sr-5b24ef0a381f8b8024a2a6fbdc3a2727"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-481acf0152e4f7b6d397f0ac561f8ccb","url":"https://github.com/advisories/GHSA-q9jv-mm3r-j47r","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-q9jv-mm3r-j47r","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:31.001Z"},{"id":"sr-5b24ef0a381f8b8024a2a6fbdc3a2727","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2024-56412","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.369Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 3.0.0; fixed 3.7.0"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.29.7"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.1.6"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 2.2.0; fixed 2.3.5"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpexcel","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 1.8.2"]}],"null_published_at":"2026-11-01T01:45:38.523Z","source_updated_at":"2025-03-06T18:38:10.072Z","source_disclosed_at":"2025-01-03T17:29:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:31.001Z"},{"id":"NVI-00003710","kind":"vulnerability","title":"PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-q9jv-mm3r-j47r","CVE-2024-56412"],"plain_summary":"OSV carries this publisher advisory for phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpspreadsheet, phpoffice/phpexcel. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 3.7.0 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 1.29.7 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.1.6 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.3.5 for phpoffice/phpspreadsheet. Confirm the publisher’s latest guidance.","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-481acf0152e4f7b6d397f0ac561f8ccb","url":"https://github.com/advisories/GHSA-q9jv-mm3r-j47r","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-q9jv-mm3r-j47r","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:31.001Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 3.0.0; fixed 3.7.0"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.29.7"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.1.6"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpspreadsheet","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 2.2.0; fixed 2.3.5"]},{"certainty":"source_listed","source_ids":["sr-481acf0152e4f7b6d397f0ac561f8ccb"],"technology":"phpoffice/phpexcel","known_exclusions":[],"conditions_summary":"# Bypass XSS sanitizer using the javascript protocol and special characters\n\n**Product**: Phpspreadsheet\n**Version**: version 3.6.0\n**CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\n**CVSS vector v.3.1**: 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)\n**CVSS vector v.4.0**: 4.8 (AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)\n**Description**: an attacker can use special characters, so that the library processes the javascript protocol with special characters and generates an HTML link\n**Impact**: executing arbitrary JavaScript code in the browser\n**Vulnerable component**: class `PhpOffice\\PhpSpreadsheet\\Writer\\Html`, method `generateRow`\n**Exploitation conditions**: a user viewing a specially generated Excel file\n**Mitigation**: additional sanitization of special characters in a string\n**Researcher**: Aleksey Solovev (Positive Technologies)\n\n# Research\n\nThe researcher discovered zero-day vulnerability Bypass XSS sanitizer using the javascript protocol and special characters in Phpspreadsheet.\n\nThe following code is written on the server, which translates the XLSX file into a HTML representation and displays it in the respons","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 1.8.2"]}],"null_published_at":"2026-10-31T22:12:48.027Z","source_updated_at":"2025-03-06T18:38:10.072Z","source_disclosed_at":"2025-01-03T17:29:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:31.001Z"}],"next_cursor":null,"snapshot_revision":"42594"}