chatwoot Signup Endpoint login improper authorization
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Privilege escalation, Security bypass
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.
Summary
A security vulnerability has been detected in chatwoot up to 4.11.1. The affected element is an unknown function of the file /app/login of the component Signup Endpoint. Such manipulation of the argument signupEnabled with the input true leads to improper authorization. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | chatwoot | 4.11.0; 4.11.1 | — | No fix listed | CNA |
- chatwoot Vendor— Affected 4.11.0; 4.11.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4990
- 2026-10-03 Alias added: GHSA-4qxw-jjp5-4rvw
References
—
Sources
- CVE-2026-4990 · CVE Program
- CVE-2026-4990 · NVD
- FIRST EPSS
- GHSA-4qxw-jjp5-4rvw · GitHub Advisory Database · CC BY 4.0
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