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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
chatwoot chatwoot unaffected
Version Status Constraints
0 affected < 4.14.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Chatwoot Subscribe
Chatwoot Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Tue, 20 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 20 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title Chatwoot before 4.14.0 Stored XSS via Help Center Video Embed Links
First Time appeared Chatwoot
Chatwoot chatwoot
Weaknesses CWE-79
CPEs cpe:2.3:a:chatwoot:chatwoot:*:*:*:*:*:*:*:*
Vendors & Products Chatwoot
Chatwoot chatwoot
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 4.8, 'vector': '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'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-20T13:25:35.524Z

Reserved: 2026-10-20T01:07:47.081Z

Link: CVE-2026-113355

cve-icon Vulnrichment

Updated: 2026-10-20T13:25:27.655Z

cve-icon NVD

Status : Received

Published: 2026-10-20T11:17:19.997

Modified: 2026-10-20T14:16:57.890

Link: CVE-2026-113355

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses