Vulnerability Description
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].
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/vincent-peugnet/wcms
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8
- https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8
- https://github.com/vincent-peugnet/wcms/issues/662
- https://www.vulncheck.com/advisories/w-wcms-through-3.18.0-rce-and-arbitrary-fil
FAQ
What is CVE-2026-105123?
CVE-2026-105123 is a vulnerability with a CVSS score of 8.8 (HIGH). 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/...
How severe is CVE-2026-105123?
CVE-2026-105123 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-105123?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.