CVE-2026-105123

W (wcms) through 3.18.0 RCE and Arbitrary File Write via Media Upload API

Published Oct 3, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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].

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Vincent-peugnet
Vincent-peugnet wcms
Vendors & Products Vincent-peugnet
Vincent-peugnet wcms
Type Values Removed Values Added
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].
Title W (wcms) through 3.18.0 RCE and Arbitrary File Write via Media Upload API
First Time appeared Wcms
Wcms wcms
Weaknesses CWE-434
CPEs cpe:2.3:a:wcms:wcms:*:*:*:*:*:*:*:*
Vendors & Products Wcms
Wcms wcms
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 5, 2026, 2:16 PM
Reserved
Oct 3, 2026, 12:05 PM
Status
Deferred
Published
Oct 4, 2026, 12:16 AM
Modified
Oct 6, 2026, 4:08 PM