CVE-2026-48526
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
脆弱性の種類
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
影響を受ける製品
- pyjwt_project pyjwt
参考情報
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-xgmm-8j9v-c9wx
- https://access.redhat.com/errata/RHSA-2026:25902
- https://access.redhat.com/errata/RHSA-2026:25928
- https://access.redhat.com/errata/RHSA-2026:26206
- https://access.redhat.com/errata/RHSA-2026:28571
- https://access.redhat.com/errata/RHSA-2026:30076