{"id":"CVE-2026-42842","state":"PUBLISHED","title":"grav-plugin-form: XSS via Taxonomy Field Values in Admin Panel","description":"The form plugin for Grav adds the ability to create and use forms. Prior to 9.1.0, a 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. This vulnerability is fixed in 9.1.0.","publishedAt":"2026-05-11T15:29:36.490Z","updatedAt":"2026-05-11T18:25:09.488Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["getgrav grav","getgrav grav-plugin-form"],"affected":[{"vendor":"getgrav","product":"grav","versions":[{"version":"< 2.0.0-beta.2","status":"affected"}]},{"vendor":"getgrav","product":"grav-plugin-form","versions":[{"version":"< 9.1.0","status":"affected"}]}],"references":["https://github.com/getgrav/grav/security/advisories/GHSA-c2q3-p4jr-c55f","https://github.com/getgrav/grav-plugin-form/commit/6bffb4c98be468a155d1656544ec45bb4a443957"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/42xxx/CVE-2026-42842.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42842","state":"PUBLISHED","datePublished":"2026-05-11T15:29:36.490Z","dateUpdated":"2026-05-11T18:25:09.488Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-30T16:44:48.376Z"},"containers":{"cna":{"title":"grav-plugin-form: XSS via Taxonomy Field Values in Admin Panel","descriptions":[{"lang":"en","value":"The form plugin for Grav adds the ability to create and use forms. Prior to 9.1.0, a 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. This vulnerability is fixed in 9.1.0."}],"affected":[{"vendor":"getgrav","product":"grav","versions":[{"version":"< 2.0.0-beta.2","status":"affected"}]},{"vendor":"getgrav","product":"grav-plugin-form","versions":[{"version":"< 9.1.0","status":"affected"}]}],"references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-c2q3-p4jr-c55f","name":"https://github.com/getgrav/grav/security/advisories/GHSA-c2q3-p4jr-c55f","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/getgrav/grav-plugin-form/commit/6bffb4c98be468a155d1656544ec45bb4a443957","name":"https://github.com/getgrav/grav-plugin-form/commit/6bffb4c98be468a155d1656544ec45bb4a443957","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-11T15:29:36.490Z"},"source":{"advisory":"GHSA-c2q3-p4jr-c55f","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-c2q3-p4jr-c55f","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-11T18:24:43.410950Z","id":"CVE-2026-42842","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-11T18:25:09.488Z"}}]}}}