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Fencer Vulns
medium 5.6

CVE-2024-0640 json

Stored XSS in chatwoot/chatwoot

published 2025-03-20 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-16432

cvss
5.6
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

A stored cross-site scripting (XSS) vulnerability exists in chatwoot/chatwoot versions 3.0.0 to 3.5.1. This vulnerability allows an admin user to inject malicious JavaScript code via the dashboard app settings, which can then be executed by another admin user when they access the affected dashboard app. The issue is fixed in version 3.5.2.

Patch / fix

  • chatwoot chatwoot/chatwoot 3.5.2

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/08b3bebf-ce3c-4416-b75e-1927ba61de85 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 5.6 CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected products

  • chatwoot chatwoot/chatwoot

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.