{"id":"CVE-2025-66301","title":"Grav is a file-based Web platform","summary":"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 …","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-285"],"vendor":"getgrav","product":"grav","affected":["grav < 1.8.0","grav = 1.8.0"],"patched":["grav 1.8.0"],"published":"2025-12-01","updated":"2026-09-26","sourceUpdated":"2026-09-26T00:10:00.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-66301","references":[{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh","label":"security-advisories@github.com"},{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","exploit-available"],"epss":0.01337,"epssPercentile":0.70054,"exploits":{"metasploit":["exploit/multi/http/grav_twig_ssti_sandbox_bypass_rce"],"checkedAt":"2026-09-26T00:23:14.517Z"},"exploitAvailable":true,"ingestedAt":"2026-09-26T00:22:39.988Z","slug":"CVE-2025-66301","body":"## Overview\n\nGrav 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.\n\n## Affected\n\n- `grav < 1.8.0`\n- `grav = 1.8.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `grav 1.8.0`","depth":"abyssal","depthScore":65,"depthScoreParts":{"impact":52.8,"likelihood":0.3,"exploitation":12,"ransomware":0},"changes":[]}