Improper access control in Grav CMS - CVE-2025-66297
Published: May 5, 2026
Vulnerability identifier: #VU130060
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-66297
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Grav CMS
Affected software:
Grav CMS
Grav CMS
Detailed vulnerability description
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper access control in Twig processing in page rendering when rendering a page with attacker-controlled Twig expressions enabled in frontmatter. A remote user can inject malicious Twig expressions into editable page content to escalate privileges.
For privilege escalation, the same non-admin user must also be logged in to the site frontend when the crafted page is visited.
How to mitigate CVE-2025-66297
Install security update from vendor's website.