{"items":[{"id":"NVI-00006616","kind":"vulnerability","title":"Grav vulnerable to Denial of Service via Improper Input Handling in 'Supported' Parameter","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-m8vh-v6r6-w7p6","CVE-2025-66305"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-bbc56b0aaf0aa156cb702977c13c1b33"],"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-b24e42efc8803b975bebe503cfff2deb"],"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":"2026-06-17T09:56:38.860Z","value":"4.9 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-64633b379860588be8694212c71badb7"},{"kind":"CVSS","as_of":"2026-06-17T09:56:38.860Z","value":"6.9 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-64633b379860588be8694212c71badb7"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.386%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.32698. Missing scores are unknown.","source_id":"sr-b24e42efc8803b975bebe503cfff2deb"}],"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-bbc56b0aaf0aa156cb702977c13c1b33","url":"https://github.com/advisories/GHSA-m8vh-v6r6-w7p6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-m8vh-v6r6-w7p6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.976Z"},{"id":"sr-64633b379860588be8694212c71badb7","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66305","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2025-66305","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:29.811Z"},{"id":"sr-b24e42efc8803b975bebe503cfff2deb","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-2025-66305","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.373Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bbc56b0aaf0aa156cb702977c13c1b33"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"**Endpoint**: `admin/config/system`  \n**Submenu**: `Languages`  \n**Parameter**: `Supported`  \n**Application**: Grav v 1.7.48\n\n---\n\n## Summary\n\nA Denial of Service (DoS) vulnerability was identified in the **\"Languages\"** submenu of the Grav **admin configuration panel** (`/admin/config/system`). Specifically, the `Supported` parameter fails to properly validate user input. If a malformed value is inserted—such as a single forward slash (`/`) or an XSS test string—it causes a fatal regular expression parsing error on the server.\n\nThis leads to application-wide failure due to the use of the `preg_match()` function with an **improperly constructed regular expression**, resulting in the following error:\n\n`preg_match(): Unknown modifier 'o' File: /system/src/Grav/Common/Language/Language.php line 244`\n\nOnce triggered, the site becomes completely unavailable to all users.\n\n---\n\n## Details\n\n- **Vulnerable Endpoint**: `POST /admin/config/system`\n    \n- **Submenu**: `Languages`\n    \n- **Parameter**: `Supported`  \n    \n\nThe application dynamically constructs a regular expression using the contents of the `Supported` field without escaping the input using `preg_quote()` or proper validation. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-11-05T03:52:54.782Z","source_updated_at":"2026-09-10T03:50:58.807Z","source_disclosed_at":"2025-12-02T00:46:05.000Z","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":"2026-10-31T21:42:30.976Z"},{"id":"NVI-00006616","kind":"vulnerability","title":"Grav vulnerable to Denial of Service via Improper Input Handling in 'Supported' Parameter","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-m8vh-v6r6-w7p6","CVE-2025-66305"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-bbc56b0aaf0aa156cb702977c13c1b33"],"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-64633b379860588be8694212c71badb7"],"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":"2026-06-17T09:56:38.860Z","value":"4.9 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-64633b379860588be8694212c71badb7"},{"kind":"CVSS","as_of":"2026-06-17T09:56:38.860Z","value":"6.9 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-64633b379860588be8694212c71badb7"}],"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-bbc56b0aaf0aa156cb702977c13c1b33","url":"https://github.com/advisories/GHSA-m8vh-v6r6-w7p6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-m8vh-v6r6-w7p6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.976Z"},{"id":"sr-64633b379860588be8694212c71badb7","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66305","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2025-66305","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:29.811Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bbc56b0aaf0aa156cb702977c13c1b33"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"**Endpoint**: `admin/config/system`  \n**Submenu**: `Languages`  \n**Parameter**: `Supported`  \n**Application**: Grav v 1.7.48\n\n---\n\n## Summary\n\nA Denial of Service (DoS) vulnerability was identified in the **\"Languages\"** submenu of the Grav **admin configuration panel** (`/admin/config/system`). Specifically, the `Supported` parameter fails to properly validate user input. If a malformed value is inserted—such as a single forward slash (`/`) or an XSS test string—it causes a fatal regular expression parsing error on the server.\n\nThis leads to application-wide failure due to the use of the `preg_match()` function with an **improperly constructed regular expression**, resulting in the following error:\n\n`preg_match(): Unknown modifier 'o' File: /system/src/Grav/Common/Language/Language.php line 244`\n\nOnce triggered, the site becomes completely unavailable to all users.\n\n---\n\n## Details\n\n- **Vulnerable Endpoint**: `POST /admin/config/system`\n    \n- **Submenu**: `Languages`\n    \n- **Parameter**: `Supported`  \n    \n\nThe application dynamically constructs a regular expression using the contents of the `Supported` field without escaping the input using `preg_quote()` or proper validation. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-11-02T20:21:10.299Z","source_updated_at":"2026-09-10T03:50:58.807Z","source_disclosed_at":"2025-12-02T00:46:05.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:30.976Z"},{"id":"NVI-00006616","kind":"vulnerability","title":"Grav vulnerable to Denial of Service via Improper Input Handling in 'Supported' Parameter","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-m8vh-v6r6-w7p6","CVE-2025-66305"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-bbc56b0aaf0aa156cb702977c13c1b33"],"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-bbc56b0aaf0aa156cb702977c13c1b33","url":"https://github.com/advisories/GHSA-m8vh-v6r6-w7p6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-m8vh-v6r6-w7p6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:30.976Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bbc56b0aaf0aa156cb702977c13c1b33"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"**Endpoint**: `admin/config/system`  \n**Submenu**: `Languages`  \n**Parameter**: `Supported`  \n**Application**: Grav v 1.7.48\n\n---\n\n## Summary\n\nA Denial of Service (DoS) vulnerability was identified in the **\"Languages\"** submenu of the Grav **admin configuration panel** (`/admin/config/system`). Specifically, the `Supported` parameter fails to properly validate user input. If a malformed value is inserted—such as a single forward slash (`/`) or an XSS test string—it causes a fatal regular expression parsing error on the server.\n\nThis leads to application-wide failure due to the use of the `preg_match()` function with an **improperly constructed regular expression**, resulting in the following error:\n\n`preg_match(): Unknown modifier 'o' File: /system/src/Grav/Common/Language/Language.php line 244`\n\nOnce triggered, the site becomes completely unavailable to all users.\n\n---\n\n## Details\n\n- **Vulnerable Endpoint**: `POST /admin/config/system`\n    \n- **Submenu**: `Languages`\n    \n- **Parameter**: `Supported`  \n    \n\nThe application dynamically constructs a regular expression using the contents of the `Supported` field without escaping the input using `preg_quote()` or proper validation. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-10-31T22:13:10.065Z","source_updated_at":"2026-09-10T03:50:58.807Z","source_disclosed_at":"2025-12-02T00:46:05.000Z","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":"2026-10-31T21:42:30.976Z"}],"next_cursor":null,"snapshot_revision":"42594"}