CVE-2026-90942
Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints
- State
- Published
- Severity
- 9.3 Critical
- Published
- Sep 14, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 14, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N | VulnCheck |
| 3.1 | 9.6 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
casdoorcasdoor |
|
References
- Researcher write-up, Finding 3third-party-advisoryexploit
- controllers/cert.go at v4.4.0technical-description
- object/cert.go at v4.4.0technical-description
- https://github.com/casdoor/casdoorproduct
- VulnCheck Advisory: Casdoor through 4.4.0 Private Key Exposure via Certificate Endpointsthird-party-advisory
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