CVE-2025-66295 HIGH

CVE-2025-66295: Grav vulnerable to Path traversal / arbitrary YAML write via user creation leading to Account Takeover / System Corruption

Vendor Getgrav
Product grav
Weakness CWE-22 · Path traversal
Published December 1, 2025
Last update December 2, 2025
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, when a user with privilege of user creation creates a new user through the Admin UI and supplies a username containing path traversal sequences (for example ..\Nijat or ../Nijat), Grav writes the account YAML file to an unintended path outside user/accounts/. The written YAML can contain account fields such as email, fullname, twofa_secret, and hashed_password. This vulnerability is fixed in 1.8.0-beta.27.

Key dates

02Disclosure timeline

December 1, 2025 CVE published
December 2, 2025 Record updated