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.

INFO

Published Date :

2026-03-12T21:41:50.427Z

Last Modified :

2026-03-13T14:58:58.769Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-32597 vulnerability.

Vendors Products
Jpadilla
  • Pyjwt
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-32597.

URL Resource
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f cve-icon cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-32597 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-32597 cve-icon
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