{"id":"CVE-2026-113355","summary":"Chatwoot before 4.14.0 Stored XSS via Help Center Video Embed Links","details":"Chatwoot before 4.14.0 contains a stored cross-site scripting vulnerability that allows account administrators to inject JavaScript by crafting video-embed links in Help Center articles. Attackers can use angle-bracket link destinations with double quotes to break out of the unescaped iframe src attribute in render_embed_from_match, executing scripts for public visitors and stealing cw_conversation widget tokens.","modified":"2026-10-21T02:55:52.761596607Z","published":"2026-10-20T10:41:40.212Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113355.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113355.json"},{"type":"PACKAGE","url":"https://github.com/chatwoot/chatwoot"},{"type":"ARTICLE","url":"https://github.com/chatwoot/chatwoot/blob/88ffa329eb6e18ae06b608d8b4bab96c0e1b8f44/lib/custom_markdown_renderer.rb#L75-L84"},{"type":"FIX","url":"https://github.com/chatwoot/chatwoot/commit/2192af80f405c70e3021191ff8b3f7e539c35e9d"},{"type":"FIX","url":"https://github.com/chatwoot/chatwoot/pull/14140"},{"type":"ADVISORY","url":"https://github.com/chatwoot/chatwoot/releases/tag/v4.14.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113355"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/chatwoot-before-4.14.0-stored-xss-via-help-center-video-embed-links"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chatwoot/chatwoot","events":[{"introduced":"0"},{"fixed":"81cb75b62feaaea25d8d4baaf099c46a8eb65c15"},{"fixed":"2192af80f405c70e3021191ff8b3f7e539c35e9d"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"0"},{"fixed":"4.14.0"}],"source":"AFFECTED_FIELD"},{"source":"REFERENCES_COMMIT","range":[{"fixed":"2192af80f405c70e3021191ff8b3f7e539c35e9d"}]},{"range":[{"fixed":"81cb75b62feaaea25d8d4baaf099c46a8eb65c15"}],"source":"REFERENCES_TAG","original_tag":"v4.14.0"}]}}],"versions":["v4.13.0","v4.12.1","v4.12.0","v4.11.1","4.11.2","v4.11.2","v4.11.0","v4.10.1","v4.10.0","v4.9.2","v4.9.1","v4.9.0","v4.8.0","v4.7.0","v4.6.0","v4.5.2","v4.5.1","v4.5.0","v4.4.0","v4.3.0","v4.2.0","v4.1.0","v4.0.4","v4.0.3","v4.0.2","v4.0.1","v4.0.0","v3.16.0","v3.15.0","v3.14.1","v3.14.0","v3.13.0","v3.12.0","v3.11.1","v3.11.0","v3.10.2","v3.10.1","v3.10.0","v3.9.0","v3.8.0","v3.7.0","v3.6.0","v3.5.2","v3.5.1","v3.5.0","v3.4.0","v3.3.1","v3.3.0","v3.2.0","v3.1.1","v3.1.0","v3.0.0","v2.18.0","v3.0.0-rc1","v2.17.1","v2.17.0","2.16.1","v2.16.0","v2.15.0","v2.14.0","v2.13.1","v2.13.0","v2.12.1","v2.12.0","v2.11.0","v2.10.0","v2.9.1","v2.9.0","v2.8.1","v2.8.0","v2.7.0","v2.6.0","v2.5.0","v2.4.1","v2.4.0","v2.3.2","v2.3.1","v2.3.0","v2.2.1","v2.2.0","v2.1.1","v2.1.0","v2.0.2","v2.0.1","v2.0.0","v1.22.1","v1.22.0","v1.21.1","v1.21.0","v1.20.0","v1.19.0","v1.18.1","v1.18.0","v1.17.1","v1.17.0","v1.16.2","v1.16.1","v1.15.1","v1.15.0","v1.14.3","v1.14.2","v1.14.1","v1.14.0","v1.13.1","v1.13.0","v1.12.2","v1.12.1","v1.12.0","v1.11.1","v1.11.0","v1.10.0","v1.9.0","v1.8.0","v1.7.2","v1.7.1","v1.7.0","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.2","1.4.2","v1.4.1","v1.4.0","v1.3.0","v1.2.4","1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113355.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N"}]}