CVE-2026-105123: Vincent-Peugnet Wcms

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

W (vincent-peugnet/wcms) through 3.18.0 contains a remote code execution vulnerability that allows authenticated editors to write arbitrary files by abusing the unvalidated path in POST /api/v0/media/upload/[*:path]. Attackers can upload .php files executed by the web server, use encoded ../ sequences to write outside the media directory, and delete arbitrary files via DELETE /api/v0/media/[*:path].

Affected products

• Vincent-Peugnet Wcms: up to and including 3.18.0

Published 2026-10-04. Last modified 2026-10-06.