CVE-2026-9097: Critical severity Casdoor Casdoor vulnerability
Casdoor versions 2.362.0 and earlier do not verify that a JWT used for token exchange is still active. The GetTokenExchangeToken() function in object/tokenoauth.go validates the JWT signature and parses its claims, but never queries the Token table to verify whether the subject token has been revoked or invalidated. Because the revocation check is entirely absent, administrators are unable to terminate active sessions or revoke compromised tokens.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Casdoorto a version that resolves this vulnerability.Fixed in 2.362.0 - Compensating control
Until the fix is applied, reduce exposure by preventing token exchange for tokens that may be compromised (e.g., block/restrict OAuth token exchange endpoints and require re-authentication for affected users).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9097?
CVE-2026-9097 has a risk score of 20, indicating it is a high severity vulnerability.
How do I fix CVE-2026-9097?
To fix CVE-2026-9097, upgrade to a version of Casdoor later than 2.362.0 that includes the necessary token verification features.
What systems are affected by CVE-2026-9097?
CVE-2026-9097 affects Casdoor versions 2.362.0 and earlier.
What impact does CVE-2026-9097 have on applications?
CVE-2026-9097 allows for potential unauthorized access due to the lack of validation for active JWT tokens.
What is the nature of the vulnerability in CVE-2026-9097?
CVE-2026-9097 is a token validation issue that fails to revoke JWT tokens during token exchange.