Quick answers
- Is CVE-2026-90942 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-90942 being exploited in the wild.
- How severe is CVE-2026-90942?
- Critical severity, with a CVSS score of 9.6, published 14 September 2026.
- Which products and versions are affected?
- Casdoor Casdoor through 4.4.0.
- Is there a fix for CVE-2026-90942?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-90942 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-90942?
- Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
Casdoor through version 4.4.0 fails to properly mask the instance-wide built-in certificate private key when returning certificate data from the /api/get-certs and /api/get-cert endpoints. The vulnerability is a broken access control issue affecting the certificate management API. An authenticated organization administrator can make requests to these endpoints to extract the private key without authorization. With the exposed private key, an attacker can forge JWT tokens for any user in any organization, including global administrators, completely bypassing authentication mechanisms. Patches addressing this insufficient output encoding are expected in versions after 4.4.0.
Affected products
- Casdoor Casdoor through 4.4.0
Timeline
- 2026-09-14: disclosed
- 2026-09-14: advisory: CVE-2026-90942