{"id":"CVE-2025-66301","aliases":["GHSA-v8x2-fjv7-8hjh"],"url":"https://o3.security/vulnerability/CVE-2025-66301","summary":"Grav ihas Broken Access Control which allows an Editor to modify the page's YAML Frontmatter to alter form processing actions","details":"Grav is a file-based Web platform. Prior to 1.8.0-beta.27, due to improper authorization checks when modifying critical fields on a POST request to /admin/pages/{page_name}, an editor with only permissions to change basic content on the form is now able to change the functioning of the form through modifying the content of the data[_json][header][form] which is the YAML frontmatter which includes the process section which dictates what happens after a user submits the form which include some important actions that could lead to further vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.","published":"2025-12-01T21:30:43.359Z","modified":"2026-08-08T03:30:11.014849496Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"getgrav/grav","fixedVersion":"1.8.0-beta.27"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66301.json"},{"type":"ADVISORY","url":"https://github.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66301"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:30:11.014849496Z"}}