This advisory has been withdrawn because it is a duplicate of GHSA-r94f-hx44-8jqf. This link is maintained to preserve external references.
Grav CMS before 2.0.13 contains a remote code execution vulnerability in the Flex Objects plugin settings validation that allows authenticated users to execute arbitrary code by uploading a ZIP file containing PHP code. Attackers can bypass routine name validation by using array notation instead of string notation, call the unZip routine with a malicious archive, and write PHP files to the web root for execution.
{
"cwe_ids": [
"CWE-94"
],
"github_reviewed": true,
"github_reviewed_at": "2026-09-17T20:45:21Z",
"nvd_published_at": "2026-08-14T12:16:44Z",
"severity": "HIGH"
}