{"id":"CVE-2026-86189","title":"WWBN AVideo contains a path traversal vulnerability in notify.ffmpeg.json.php that allows unauthenticated attackers to write files to arbitrary locations by supplying a caller-chosen path in the avideoRelativePath parameter","summary":"WWBN AVideo contains a path traversal vulnerability in notify.ffmpeg.json.php that allows unauthenticated attackers to write files to arbitrary locations by supplying a caller-chosen path in the avideoRelativePath parameter. Attackers ca…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-73"],"vendor":"WWBN","product":"AVideo","affected":["AVideo <= 29.0"],"published":"2026-09-05","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:18.263","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86189","references":[{"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-cprx-fggj-7vpq","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-path-traversal-via-notify-ffmpeg-json-php","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00406,"epssPercentile":0.34578,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-18T17:07:13.644752Z"},"ingestedAt":"2026-09-06T07:51:57.280Z","slug":"CVE-2026-86189","body":"## Overview\n\nWWBN AVideo contains a path traversal vulnerability in notify.ffmpeg.json.php that allows unauthenticated attackers to write files to arbitrary locations by supplying a caller-chosen path in the avideoRelativePath parameter. Attackers can replay any previously issued ciphertext as a notifyCode token, which is decrypted but never validated, to bypass authentication and write files to the application root and subdirectories.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}