Medium severity · published Oct 20, 2026
CVE-2026-113355
Chatwoot before 4.14.0 Stored XSS via Help Center Video Embed Links
4.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chatwoot · chatwoot
before 4.14.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113355
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113355
github.com
https://github.com/chatwoot/chatwoot/blob/88ffa329eb6e18ae06b608d8b4bab96c0e1b8f44/lib/custom_markdown_renderer.rb#L75-L84
github.com
https://github.com/chatwoot/chatwoot/commit/2192af80f405c70e3021191ff8b3f7e539c35e9d
github.com
https://github.com/chatwoot/chatwoot/pull/14140
github.com
https://github.com/chatwoot/chatwoot/releases/tag/v4.14.0
www.vulncheck.com
https://www.vulncheck.com/advisories/chatwoot-before-4.14.0-stored-xss-via-help-center-video-embed-links
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