Vulnerability DatabaseCVE-2026-90942
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CVE-2026-90942
Published:September 14, 2026
Updated:October 10, 2026
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 Packages
https://github.com/casdoor/casdoor.git (GITHUB):
Affected version(s) >=v4.0.0 <v4.5.0
Fix Suggestion:
Update to version v4.5.0
Related Resources (7)
https://nvd.nist.gov/vuln/detail/CVE-2026-90942
https://www.vulncheck.com/advisories/casdoor-through-4.4.0-private-key-exposure-via-certificate-endpoints
https://github.com/casdoor/casdoor/blob/v4.4.0/object/cert.go
https://github.com/casdoor/casdoor
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-forgery
https://github.com/casdoor/casdoor/blob/v4.4.0/controllers/cert.go
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90942.json
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
CWE-863
EPSS
Base Score:
0.28