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GHSA-c9w5-qp6m-m395

Casdoor: GetTokenExchangeToken bypass through lack of cross-organization JWT signature check

Source: GitHub Advisory Database (reviewed) Critical CVE-2026-9094

Packages

EcosystemPackageAffectedFixed in
Go github.com/casdoor/casdoor < 2.387.0 2.387.0

Details

As written in the advisory (Markdown source, shown as plain text).

Casdoor versions 2.362.0 and earlier contain a vulnerability enabling cross-organization token exchange. The GetTokenExchangeToken function in object/token_oauth.go validates JWT signatures but does not verify that the token's user belongs to the same organization as the target application. This can result in privilege escalation across organizational boundaries.

References

External links from the advisory. They lead to third-party sites.