{"id":"CVE-2026-105123","title":"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]","summary":"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…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-434"],"vendor":"vincent-peugnet","product":"wcms","affected":["wcms <= 3.18.0"],"published":"2026-10-04","updated":"2026-10-04","sourceUpdated":"2026-10-04T00:16:35.703","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105123","references":[{"url":"https://github.com/vincent-peugnet/wcms","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Controllerapimedia.php#L24-L44","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Media.php#L98","label":"disclosure@vulncheck.com"},{"url":"https://github.com/vincent-peugnet/wcms/issues/662","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/w-wcms-through-3.18.0-rce-and-arbitrary-file-write-via-media-upload-api","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-03T23:50:15.754Z","slug":"CVE-2026-105123","body":"## Overview\n\nW (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].\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}