Deserialization of Untrusted Data in Grav CMS - #VU130080
Published: May 5, 2026
Vulnerability identifier: #VU130080
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to deserialization of untrusted data in FileCache when processing cache data from a writable cache directory. A remote attacker can place a crafted serialized object in the cache to execute arbitrary code.
Exploitation requires a file write primitive to the cache directory.
Affected software
Grav CMS
Remediation
Install security update from vendor's website.
Grav CMS - update to 2.0.0 beta.2