CVE-2026-32597

HIGH

7.5

Description

PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/13/2026

Derniere modification3/19/2026

Sourcenvd

Observations honeypot0

Produits affectes

pyjwt_project:pyjwt

Faiblesses (CWE)

CWE-345CWE-863

References

https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f(security-advisories@github.com)

https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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