{"id":"CVE-2025-66296","title":"Grav is a file-based Web platform","summary":"Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permissio…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-266"],"vendor":"getgrav","product":"grav","affected":["grav >= 1.7.49.5, < 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-2025-66296","references":[{"url":"https://github.com/getgrav/grav/commit/3462d94d575064601689b236508c316242e15741","label":"security-advisories@github.com"},{"url":"https://github.com/getgrav/grav/security/advisories/GHSA-cjcp-qxvg-4rjm","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00318,"epssPercentile":0.22088,"ingestedAt":"2026-09-26T00:22:39.987Z","slug":"CVE-2025-66296","body":"## Overview\n\nGrav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access. This vulnerability is fixed in 1.8.0-beta.27.\n\n## Affected\n\n- `grav >= 1.7.49.5, < 1.8.0`\n- `grav = 1.8.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `grav 1.8.0`","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}