Is CVE-2026-32597 actively exploited?

CVE-2026-32597 has no public evidence of in-the-wild exploitation as of 2026-03-13.

What is the CVSS score for CVE-2026-32597?

CVE-2026-32597 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

How do I patch CVE-2026-32597?

Vendor patch guidance is linked from the references on this page. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-32597.

Which products are affected by CVE-2026-32597?

Affected products for CVE-2026-32597 are listed on this page once vendor data becomes available.

Fix CVE-2026-32597 - HIGH Vulnerability

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
Weaknesses: CWE-345 CWE-863 · Incorrect Authorization

Metadata

Primary Vendor: UNKNOWN
Published: 3/13/2026
Last Modified: 3/13/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-32597

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary