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VULNERABILITIES

CVE-2026-32597 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: redhat-SADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:10140 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:10141 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:10184 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:12176 redhat-SADP
https://access.redhat.com/errata/RHSA-2026:13508 redhat-SADP

see all 36 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-345Insufficient Verification of Data Authenticity[email protected]
CWE-347Improper Verification of Cryptographic Signatureredhat-SADP
CWE-863Incorrect Authorization[email protected]

Affected Products

ProductVersions
pyjwt project pyjwt
< 2.12.0

CPE

  • cpe:2.3:a:pyjwt_project:pyjwt:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

18 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-32597
NVD Published Date:
Mar 13, 2026
NVD Last Modified:
Sep 10, 2026
Source:
[email protected]
CVE-2026-32597 Details - Not Deferred