Vulnerability · Published Sep 14, 2026 · Assigned by VulnCheck
CVE-2026-90942Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints
Critical 9.6
In plain English
A critical-severity incorrect authorization in casdoor from casdoor. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.3%top 79.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
References
- Researcher write-up, Finding 3 third-party-advisory, exploit
- controllers/cert.go at v4.4.0 technical-description
- object/cert.go at v4.4.0 technical-description
- https://github.com/casdoor/casdoor product
- VulnCheck Advisory: Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints third-party-advisory