PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.4epss 0.4%
probabilidad de explotación
0.4%top 68% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Productos afectados
jpadilla · pyjwtReferencias
https://access.redhat.com/errata/RHSA-2026:25902https://access.redhat.com/errata/RHSA-2026:25928https://access.redhat.com/errata/RHSA-2026:26206https://access.redhat.com/errata/RHSA-2026:28571https://access.redhat.com/errata/RHSA-2026:30076https://access.redhat.com/errata/RHSA-2026:30088https://access.redhat.com/errata/RHSA-2026:30089https://access.redhat.com/errata/RHSA-2026:33683https://access.redhat.com/errata/RHSA-2026:34160https://access.redhat.com/errata/RHSA-2026:34365https://access.redhat.com/errata/RHSA-2026:34374https://access.redhat.com/errata/RHSA-2026:35835