{"schema":"threatline.record/2","record":{"id":"CVE-2026-105123","aliases":[],"summary":"W (wcms) through 3.18.0 RCE and Arbitrary File Write via Media Upload API","details":"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].","categories":["Unclassified"],"product":"wcms","vendor":"vincent-peugnet","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105123","source_modified_at":"2026-10-05T14:16:25.044Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"wcms","vendor":"vincent-peugnet","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"3.18.0"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00516,"percentile":0.43067,"score_date":"2026-10-23"},"published_at":"2026-10-03T22:30:12.394Z","modified_at":"2026-10-05T14:16:25.044Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105123","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-05T14:16:25.044Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105123","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/vincent-peugnet/wcms/issues/662","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/vincent-peugnet/wcms","tags":["product"]},{"source":"CVE List","url":"https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Controllerapimedia.php#L24-L44","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Media.php#L98","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/w-wcms-through-3.18.0-rce-and-arbitrary-file-write-via-media-upload-api","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-05T14:15:35.243031Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-05T14:16:25.044Z","content_hash":"6f9a95154c9917a95f9a26933bf0a84c77a50f21cc7a07d55b4de57b2cd3ea0e"}}