CVE-2026-113355

MEDIUM 4.8

Chatwoot before 4.14.0 Stored XSS via Help Center Video Embed Links

CVSS Score

4.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	chatwoot
Product	chatwoot
Published	Oct 20, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

chatwoot / chatwoot

0 < 4.14.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/chatwoot/chatwoot/pull/14140 github.com: https://github.com/chatwoot/chatwoot/commit/2192af80f405c70e3021191ff8b3f7e539c35e9d github.com: https://github.com/chatwoot/chatwoot/releases/tag/v4.14.0 github.com: https://github.com/chatwoot/chatwoot/blob/88ffa329eb6e18ae06b608d8b4bab96c0e1b8f44/lib/custom_markdown_renderer.rb#L75-L84 vulncheck.com: https://www.vulncheck.com/advisories/chatwoot-before-4.14.0-stored-xss-via-help-center-video-embed-links

Credits

Ostorlab