{"id":"CVE-2026-42842","summary":"grav-plugin-form: XSS via Taxonomy Field Values in Admin Panel","details":"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.","aliases":["GHSA-c2q3-p4jr-c55f"],"modified":"2026-07-08T08:12:35.241684364Z","published":"2026-05-11T15:29:36.490Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42842.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42842.json"},{"type":"ADVISORY","url":"https://github.com/getgrav/grav/security/advisories/GHSA-c2q3-p4jr-c55f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42842"},{"type":"FIX","url":"https://github.com/getgrav/grav-plugin-form/commit/6bffb4c98be468a155d1656544ec45bb4a443957"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getgrav/grav","events":[{"introduced":"0"},{"fixed":"3077b04b220318883ed34b6ae2a6cd0f25dba92e"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"2.0.0-beta.2"}]}},{"type":"GIT","repo":"https://github.com/getgrav/grav-plugin-form","events":[{"introduced":"0"},{"fixed":"6bffb4c98be468a155d1656544ec45bb4a443957"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"9.1.0"}]}}],"versions":["2.0.0-beta.1","1.8.0-beta.29","1.8.0-beta.28","1.8.0-beta.27","1.8.0-beta.26","1.8.0-beta.25","1.8.0-beta.24","1.8.0-beta.23","1.8.0-beta.22","1.8.0-beta.21","1.8.0-beta.20","1.8.0-beta.19","1.8.0-beta.18","1.8.0-beta.17","1.8.0-beta.16","1.8.0-beta.15","1.8.0-beta.14","1.8.0-beta.13","1.8.0-beta.12","1.8.0-beta.11","1.8.0-beta.10","1.8.0-beta.9","1.8.0-beta.8","1.8.0-beta.7","1.8.0-beta.6","1.8.0-beta.5","1.8.0-beta.4","1.8.0-beta.3","1.8.0-beta.2","1.8.0-beta.1","1.7.0-rc.20","1.7.0-rc.19","1.7.0-rc.18","1.7.0-rc.17","1.7.0-rc.15","1.7.0-rc.14","1.7.0-rc.13","1.7.0-rc.12","1.7.0-rc.10","1.7.0-rc.9","1.7.0-rc.8","1.7.0-rc.7","1.7.0-rc.6","1.7.0-rc.5","1.7.0-rc.4","1.7.0-rc.3","1.7.0-rc.2","1.7.0-rc.1","1.7.0-beta.10","1.7.0-beta.9","1.7.0-beta.8","1.7.0-beta.7","1.7.0-beta.6","1.7.0-beta.5","1.7.0-beta.4","1.7.0-beta.3","1.7.0-beta.2","1.7.0-beta.1","1.6.0-rc.4","1.6.0-rc.3","1.6.0-rc.2","1.6.0-rc.1","1.6.0-beta.8","1.6.0-beta.7","1.6.0-beta.6","1.6.0-beta.5","1.6.0-beta.2","1.6.0-beta.1","1.5.0-rc.1","1.5.0-beta.2","1.5.0-beta.1","1.3.0-rc.5","1.3.0-rc.4","1.3.0-rc.3","1.3.0-rc.1","1.2.0-rc.3","1.2.0-rc.2","1.2.0-rc.1","1.1.9-rc.3","1.1.9-rc.2","1.1.9-rc.1","1.1.0-rc.3","1.1.0-rc.2","1.1.0-rc.1","1.1.0-beta.5","1.1.0-beta.4","1.1.0-beta.3","1.1.0-beta.2","1.1.0-beta.1","0.9.19","0.9.18","0.9.17","0.9.16","0.9.15","0.9.14","0.9.13","0.9.12","0.9.11","0.9.10","0.9.9","0.9.8","0.9.7","0.9.6","0.9.5","0.9.4","0.9.3","0.9.2","0.9.0","0.8.0","4.0.0","3.0.0-rc.4","3.0.0-rc.3","3.0.0-rc.2","3.0.0-rc.1","3.0.0-beta.5","3.0.0-beta.4","3.0.0-beta.3","3.0.0-beta.2","3.0.0-beta.1","2.8.0-rc.2","2.8.0-rc.1","2.0.8-rc.1","2.0.0-rc.1","1.3.0-rc.2","1.3.0-beta.6","1.3.0-beta.4","1.3.0-beta.3","1.3.0-beta.2","1.3.0-beta.1","0.7.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42842.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}