CVE-2026-105123 W (vincent-peugnet/wcms) - Remote Code Execution

W (vincent-peugnet/wcms) through 3.18.0 contains a remote code execution caused by unvalidated path in POST /api/v0/media/upload/[*:path], letting authenticated editors write arbitrary files including executable PHP, exploit requires authenticated editor privileges.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.52% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, File System Write, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
4 October 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Update to the latest version beyond 3.18.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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