{"id":"CVE-2026-116139","title":"WWBN AVideo 26.0 through 29.3.0 Stored XSS via Comment Markdown Rendering","summary":"WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers …","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"WWBN","product":"AVideo","affected":["AVideo >= 26.0 <= 29.3.0"],"published":"2026-10-25","updated":"2026-10-25","sourceUpdated":"2026-10-25T13:19:51.674Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116139","references":[{"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-cx46-26xc-2w7f","label":"GitHub Security Advisory (GHSA-cx46-26xc-2w7f)"},{"url":"https://github.com/WWBN/AVideo/commit/f13587c59346b4bf0f449273021d29b869594559","label":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/wwbn-avideo-26.0-through-29.3.0-stored-xss-via-comment-markdown-rendering","label":"VulnCheck Advisory: WWBN AVideo 26.0 through 29.3.0 Stored XSS via Comment Markdown Rendering"}],"tags":["cve.org"],"ingestedAt":"2026-10-25T22:08:29.956Z","slug":"CVE-2026-116139","body":"## Overview\n\nWWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers can post a comment starting with an img tag carrying an onerror handler, which bypasses the inline sanitizer and executes in viewers' browsers under the application origin.\n\n## Affected\n\n- `AVideo >= 26.0 <= 29.3.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}