{"items":[{"id":"NVI-00001963","kind":"vulnerability","title":"Grav Vulnerable to XSS via Taxonomy Field Values in Admin Panel","revision":5,"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-c2q3-p4jr-c55f","CVE-2026-42842"],"plain_summary":"GitHub lists this reviewed advisory for getgrav/grav. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1b53292d6c1d6826471903135a36da3c"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. 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An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel.\n\nAdditionally, Grav's built-in XSS detection (`Security::detectXss()`) can be bypassed by using payloads that close the `/` context and use unquoted event handlers - the `on_events` regex fails to match event handlers without quotes or trailing spaces before `>`.\n\n### Important\n\n- The vulnerability is in the Form plugin (`select.html.twig`), which is installed by default with Grav\n- The XSS is cross-page: a malicious taxonomy value on one page executes when an admin edits any page, because taxonomy options are rendered from a shared global pool\n- An editor can exploit this without any other vulnerability - taxonomy fields are not in the server-side restricted fields list\n- The `HttpOnly` flag on session cookies prevents direct session theft, but the XSS c","public_affected_ranges":["< 2.0.0-beta.2"]},{"certainty":"source_listed","source_ids":["sr-068956857d6eee91987245870d21d0f0"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nA Stored Cross-Site Scripting (XSS) vulnerability exists in the Grav CMS Form plugin's select field template. Taxonomy tag and category values are rendered with the Twig `|raw` filter in the admin panel, bypassing the global autoescape protection. An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel.\n\nAdditionally, Grav's built-in XSS detection (`Security::detectXss()`) can be bypassed by using payloads that close the `/` context and use unquoted event handlers - the `on_events` regex fails to match event handlers without quotes or trailing spaces before `>`.\n\n### Important\n\n- The vulnerability is in the Form plugin (`select.html.twig`), which is installed by default with Grav\n- The XSS is cross-page: a malicious taxonomy value on one page executes when an admin edits any page, because taxonomy options are rendered from a shared global pool\n- An editor can exploit this without any other vulnerability - taxonomy fields are not in the server-side restricted fields list\n- The `HttpOnly` flag on session cookies prevents direct session theft, but the XSS c","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-11-08T15:11:47.484Z","source_updated_at":"2026-05-13T14:04:30.000Z","source_disclosed_at":"2026-05-05T21:24:45.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00001963","kind":"vulnerability","title":"Grav Vulnerable to XSS via Taxonomy Field Values in Admin Panel","revision":4,"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-c2q3-p4jr-c55f","CVE-2026-42842"],"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 2.0.0-beta.2 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-068956857d6eee91987245870d21d0f0"],"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-1b53292d6c1d6826471903135a36da3c"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-42842","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.853Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-068956857d6eee91987245870d21d0f0"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nA Stored Cross-Site Scripting (XSS) vulnerability exists in the Grav CMS Form plugin's select field template. Taxonomy tag and category values are rendered with the Twig `|raw` filter in the admin panel, bypassing the global autoescape protection. An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel.\n\nAdditionally, Grav's built-in XSS detection (`Security::detectXss()`) can be bypassed by using payloads that close the `/` context and use unquoted event handlers - the `on_events` regex fails to match event handlers without quotes or trailing spaces before `>`.\n\n### Important\n\n- The vulnerability is in the Form plugin (`select.html.twig`), which is installed by default with Grav\n- The XSS is cross-page: a malicious taxonomy value on one page executes when an admin edits any page, because taxonomy options are rendered from a shared global pool\n- An editor can exploit this without any other vulnerability - taxonomy fields are not in the server-side restricted fields list\n- The `HttpOnly` flag on session cookies prevents direct session theft, but the XSS c","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-11-07T14:01:58.719Z","source_updated_at":"2026-09-10T03:50:46.554Z","source_disclosed_at":"2026-05-05T21:24:45.000Z","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":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00001963","kind":"vulnerability","title":"Grav Vulnerable to XSS via Taxonomy Field Values in Admin Panel","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-c2q3-p4jr-c55f","CVE-2026-42842"],"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 2.0.0-beta.2 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-068956857d6eee91987245870d21d0f0"],"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-969f536c05a62b64314df1a50c096815"],"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":"2026-10-26T18:10:00.173Z","value":"5.4 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-54e6a938991d4e46d0430b6f3975527e"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.183%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.07933. Missing scores are unknown.","source_id":"sr-969f536c05a62b64314df1a50c096815"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. 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An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel.\n\nAdditionally, Grav's built-in XSS detection (`Security::detectXss()`) can be bypassed by using payloads that close the `/` context and use unquoted event handlers - the `on_events` regex fails to match event handlers without quotes or trailing spaces before `>`.\n\n### Important\n\n- The vulnerability is in the Form plugin (`select.html.twig`), which is installed by default with Grav\n- The XSS is cross-page: a malicious taxonomy value on one page executes when an admin edits any page, because taxonomy options are rendered from a shared global pool\n- An editor can exploit this without any other vulnerability - taxonomy fields are not in the server-side restricted fields list\n- The `HttpOnly` flag on session cookies prevents direct session theft, but the XSS c","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-11-04T02:53:03.151Z","source_updated_at":"2026-09-10T03:50:46.554Z","source_disclosed_at":"2026-05-05T21:24:45.000Z","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":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00001963","kind":"vulnerability","title":"Grav Vulnerable to XSS via Taxonomy Field Values in Admin Panel","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-c2q3-p4jr-c55f","CVE-2026-42842"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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This report has not examined your application.","related_sources":[{"id":"sr-068956857d6eee91987245870d21d0f0","url":"https://github.com/advisories/GHSA-c2q3-p4jr-c55f","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-c2q3-p4jr-c55f","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.693Z"},{"id":"sr-54e6a938991d4e46d0430b6f3975527e","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42842","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-42842","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:02.489Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-068956857d6eee91987245870d21d0f0"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\n\nA Stored Cross-Site Scripting (XSS) vulnerability exists in the Grav CMS Form plugin's select field template. Taxonomy tag and category values are rendered with the Twig `|raw` filter in the admin panel, bypassing the global autoescape protection. An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel.\n\nAdditionally, Grav's built-in XSS detection (`Security::detectXss()`) can be bypassed by using payloads that close the `/` context and use unquoted event handlers - the `on_events` regex fails to match event handlers without quotes or trailing spaces before `>`.\n\n### Important\n\n- The vulnerability is in the Form plugin (`select.html.twig`), which is installed by default with Grav\n- The XSS is cross-page: a malicious taxonomy value on one page executes when an admin edits any page, because taxonomy options are rendered from a shared global pool\n- An editor can exploit this without any other vulnerability - taxonomy fields are not in the server-side restricted fields list\n- The `HttpOnly` flag on session cookies prevents direct session theft, but the XSS c","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-11-02T20:21:10.261Z","source_updated_at":"2026-09-10T03:50:46.554Z","source_disclosed_at":"2026-05-05T21:24:45.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.693Z"},{"id":"NVI-00001963","kind":"vulnerability","title":"Grav Vulnerable to XSS via Taxonomy Field Values in Admin Panel","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c2q3-p4jr-c55f","CVE-2026-42842"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel.\n\nAdditionally, Grav's built-in XSS detection (`Security::detectXss()`) can be bypassed by using payloads that close the `/` context and use unquoted event handlers - the `on_events` regex fails to match event handlers without quotes or trailing spaces before `>`.\n\n### Important\n\n- The vulnerability is in the Form plugin (`select.html.twig`), which is installed by default with Grav\n- The XSS is cross-page: a malicious taxonomy value on one page executes when an admin edits any page, because taxonomy options are rendered from a shared global pool\n- An editor can exploit this without any other vulnerability - taxonomy fields are not in the server-side restricted fields list\n- The `HttpOnly` flag on session cookies prevents direct session theft, but the XSS c","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.0.0-beta.2"]}],"null_published_at":"2026-10-31T21:53:28.060Z","source_updated_at":"2026-09-10T03:50:46.554Z","source_disclosed_at":"2026-05-05T21:24:45.000Z","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":"2026-10-31T21:42:10.693Z"}],"next_cursor":null,"snapshot_revision":"42594"}