CVE-2026-113355
Chatwoot before 4.14.0 Stored XSS via Help Center Video Embed Links
- State
- Published
- Severity
- 4.8 Medium
- Published
- Oct 20, 2026
- Updated
- Oct 20, 2026
- Reserved
- Oct 20, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | 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 | VulnCheck |
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
chatwootchatwoot |
|
References
- https://github.com/chatwoot/chatwoot/pull/14140patchissue-tracking
- https://github.com/chatwoot/chatwoot/commit/2192af80f405c70e3021191ff8b3f7e539c35e9dpatch
- chatwoot v4.14.0 Release Notesrelease-notes
- https://github.com/chatwoot/chatwoot/blob/88ffa329eb6e18ae06b608d8b4bab96c0e1b8f44/lib/custom_markdown_renderer.rb#L75-L84technical-description
- VulnCheck Advisory: Chatwoot before 4.14.0 Stored XSS via Help Center Video Embed Linksthird-party-advisory
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