Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
Casdoor through 4.4.0 fails to properly mask the instance-wide built-in certificate private key in /api/get-certs and /api/get-cert endpoints, allowing organization administrators to retrieve it. Attackers can use the exposed private key to forge JWT tokens for any user in any organization, including global administrators.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-90942
- 2026-10-03 Alias added: GHSA-q7wf-9cg6-97h6
References
More Casdoor vulnerabilities
- TI-2026-62128 Casdoor through 4.4.0 Cross-Organization User Administration via /api/mcp CVSS 4.0CRITICAL 9.4
- TI-2026-13152 Improper privilege management in Casdoor CVSS 3.1CRITICAL 9.9
- TI-2024-27720 GHSL-2024-035: Casdoor CORS misconfiguration CVSS 3.1HIGH 8.8
- TI-2022-22096 Casdoor before v1.126.1 was discovered to contain an arbitrary file deletion vulnerability via the uploadFile function. CVSS 3.1HIGH 8.1
- TI-2022-08069 The query API in Casdoor before 1.13.1 has a SQL injection vulnerability related to the… CVSS 3.1HIGH 7.5
- TI-2023-17434 Casdoor v1.331.0 and below was discovered to contain a Cross-Site Request Forgery (CSRF)… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-90942 · CVE Program
- CVE-2026-90942 · NVD
- FIRST EPSS
- GHSA-q7wf-9cg6-97h6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences