CVE-2026-90942 Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints
Organization administrators can retrieve the private key from certificate endpoints, enabling JWT forgery and full administrative access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90942?
CVE-2026-90942 is a critical vulnerability in casdoor, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-90942?
How do I fix CVE-2026-90942?
No fix has been published for CVE-2026-90942 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-90942 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90942 exists.
Sources
Also known as GHSA-q7wf-9cg6-97h6.