CVE-2026-90942Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.6 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
casdoor casdoor casdoor:casdoor (from the name) | through 4.4.0 | CNA record |
References
- https://github.com/geo-chen/oss/blob/main/casdoor.md#finding-3-organization-admin-can-read-the-global-built-in-jwt-signing-private-key-via-apiget-certs-and-apiget-cert-incomplete-fix-of-3003--enables-cross-organization-token-forgerythird-party-advisory, exploit
- https://github.com/casdoor/casdoor/blob/v4.4.0/controllers/cert.gotechnical-description
- https://github.com/casdoor/casdoor/blob/v4.4.0/object/cert.gotechnical-description
- https://github.com/casdoor/casdoorproduct
- https://www.vulncheck.com/advisories/casdoor-through-4.4.0-private-key-exposure-via-certificate-endpointsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.