{"items":[{"id":"NVI-00007199","kind":"vulnerability","title":"PHPMailer untrusted code may be run from an overridden address validator","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-77mr-wc79-m8j3","CVE-2021-3603"],"plain_summary":"OSV carries this publisher advisory for phpmailer/phpmailer. 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 6.5.0 for phpmailer/phpmailer. Confirm the publisher’s latest guidance.","source_ids":["sr-d31da024f3e791bed9cfa6ff811c9625"],"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-c8bbb3304c42ca316601437a1c318cf5"],"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":"2026-06-17T04:05:25.257Z","value":"6.8 MEDIUM (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-9eaf86a262fea78d99ca36006d723eca"},{"kind":"CVSS","as_of":"2026-06-17T04:05:25.257Z","value":"8.1 HIGH (3.1)","meaning":"security@huntr.dev severity; no combined Null risk score.","source_id":"sr-9eaf86a262fea78d99ca36006d723eca"},{"kind":"CVSS","as_of":"2026-06-17T04:05:25.257Z","value":"8.1 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-9eaf86a262fea78d99ca36006d723eca"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"2.260%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.82979. Missing scores are unknown.","source_id":"sr-c8bbb3304c42ca316601437a1c318cf5"}],"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-d31da024f3e791bed9cfa6ff811c9625","url":"https://github.com/advisories/GHSA-77mr-wc79-m8j3","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-77mr-wc79-m8j3","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.945Z"},{"id":"sr-9eaf86a262fea78d99ca36006d723eca","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3603","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2021-3603","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T23:13:26.837Z"},{"id":"sr-c8bbb3304c42ca316601437a1c318cf5","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-2021-3603","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d31da024f3e791bed9cfa6ff811c9625"],"technology":"phpmailer/phpmailer","known_exclusions":[],"conditions_summary":"If a function is defined that has the same name as the default built-in email address validation scheme (`php`), it will be called in default configuration as when no validation scheme is provided, the default scheme's callable `php` was being called. If an attacker is able to inject such a function into the application (a much bigger issue), it will be called whenever an email address is validated, such as when calling `validateAddress()`.\n\n### Impact\nLow impact – exploitation requires that an attacker can already inject code into an application, but it provides a trigger pathway.\n\n### Patches\nThis is patched in PHPMailer 6.5.0 by denying the use of simple strings as validator function names, which is a very minor BC break.\n\n### Workarounds\nInject your own email validator function.\n\n### References\nReported by Vikrant Singh Chauhan via huntr.dev.\nCVE-2021-3603\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in the PHPMailer project\n* [Email us](mailto:phpmailer@synchromed","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 6.5.0"]}],"null_published_at":"2026-11-06T21:03:48.027Z","source_updated_at":"2024-02-17T05:42:33.365Z","source_disclosed_at":"2021-06-22T15:18:02.000Z","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":"2026-10-31T21:41:59.945Z"},{"id":"NVI-00007199","kind":"vulnerability","title":"PHPMailer untrusted code may be run from an overridden address validator","revision":2,"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-77mr-wc79-m8j3","CVE-2021-3603"],"plain_summary":"OSV carries this publisher advisory for phpmailer/phpmailer. 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 6.5.0 for phpmailer/phpmailer. Confirm the publisher’s latest guidance.","source_ids":["sr-d31da024f3e791bed9cfa6ff811c9625"],"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-9eaf86a262fea78d99ca36006d723eca"],"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":"2026-06-17T04:05:25.257Z","value":"6.8 MEDIUM (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-9eaf86a262fea78d99ca36006d723eca"},{"kind":"CVSS","as_of":"2026-06-17T04:05:25.257Z","value":"8.1 HIGH (3.1)","meaning":"security@huntr.dev severity; no combined Null risk score.","source_id":"sr-9eaf86a262fea78d99ca36006d723eca"},{"kind":"CVSS","as_of":"2026-06-17T04:05:25.257Z","value":"8.1 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-9eaf86a262fea78d99ca36006d723eca"}],"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-d31da024f3e791bed9cfa6ff811c9625","url":"https://github.com/advisories/GHSA-77mr-wc79-m8j3","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-77mr-wc79-m8j3","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.945Z"},{"id":"sr-9eaf86a262fea78d99ca36006d723eca","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3603","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2021-3603","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T23:13:26.837Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d31da024f3e791bed9cfa6ff811c9625"],"technology":"phpmailer/phpmailer","known_exclusions":[],"conditions_summary":"If a function is defined that has the same name as the default built-in email address validation scheme (`php`), it will be called in default configuration as when no validation scheme is provided, the default scheme's callable `php` was being called. If an attacker is able to inject such a function into the application (a much bigger issue), it will be called whenever an email address is validated, such as when calling `validateAddress()`.\n\n### Impact\nLow impact – exploitation requires that an attacker can already inject code into an application, but it provides a trigger pathway.\n\n### Patches\nThis is patched in PHPMailer 6.5.0 by denying the use of simple strings as validator function names, which is a very minor BC break.\n\n### Workarounds\nInject your own email validator function.\n\n### References\nReported by Vikrant Singh Chauhan via huntr.dev.\nCVE-2021-3603\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in the PHPMailer project\n* [Email us](mailto:phpmailer@synchromed","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 6.5.0"]}],"null_published_at":"2026-11-06T15:18:11.515Z","source_updated_at":"2024-02-17T05:42:33.365Z","source_disclosed_at":"2021-06-22T15:18:02.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:59.945Z"},{"id":"NVI-00007199","kind":"vulnerability","title":"PHPMailer untrusted code may be run from an overridden address validator","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-77mr-wc79-m8j3","CVE-2021-3603"],"plain_summary":"OSV carries this publisher advisory for phpmailer/phpmailer. 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 6.5.0 for phpmailer/phpmailer. Confirm the publisher’s latest guidance.","source_ids":["sr-d31da024f3e791bed9cfa6ff811c9625"],"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-d31da024f3e791bed9cfa6ff811c9625","url":"https://github.com/advisories/GHSA-77mr-wc79-m8j3","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-77mr-wc79-m8j3","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.945Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d31da024f3e791bed9cfa6ff811c9625"],"technology":"phpmailer/phpmailer","known_exclusions":[],"conditions_summary":"If a function is defined that has the same name as the default built-in email address validation scheme (`php`), it will be called in default configuration as when no validation scheme is provided, the default scheme's callable `php` was being called. If an attacker is able to inject such a function into the application (a much bigger issue), it will be called whenever an email address is validated, such as when calling `validateAddress()`.\n\n### Impact\nLow impact – exploitation requires that an attacker can already inject code into an application, but it provides a trigger pathway.\n\n### Patches\nThis is patched in PHPMailer 6.5.0 by denying the use of simple strings as validator function names, which is a very minor BC break.\n\n### Workarounds\nInject your own email validator function.\n\n### References\nReported by Vikrant Singh Chauhan via huntr.dev.\nCVE-2021-3603\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in the PHPMailer project\n* [Email us](mailto:phpmailer@synchromed","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 6.5.0"]}],"null_published_at":"2026-10-31T22:13:14.316Z","source_updated_at":"2024-02-17T05:42:33.365Z","source_disclosed_at":"2021-06-22T15:18:02.000Z","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":"2026-10-31T21:41:59.945Z"}],"next_cursor":null,"snapshot_revision":"40769"}