Global administrator impersonation via exposed signing key
Published Sep 14, 2026 · Updated Sep 14, 2026
Private-key disclosure in Casdoor 4.4.0 and earlier allows remote authenticated users to forge tokens for global administrators. The /api/get-certs and /api/get-cert handlers return the instance-wide cert-built-in record without masking its PrivateKey field, exposing the signing secret in API responses. Organization-administrator access is required; possession of the key permits cross-organization JWT impersonation, including access as a global administrator.
Summary
What happened
Private-key disclosure in Casdoor 4.4.0 and earlier allows remote authenticated users to forge tokens for global administrators. The /api/get-certs and /api/get-cert handlers return the instance-wide cert-built-in record without masking its PrivateKey field, exposing the signing secret in API responses. Organization-administrator access is required; possession of the key permits cross-organization JWT impersonation, including access as a global administrator.
The record
- CVE
- CVE-2026-90942
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Casdoor
- Product
- Casdoor
- Classifications
- T1552.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=4.4.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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