What is CVE-2026-32597?

CVE-2026-32597 is a high-severity vulnerability in Jpadilla Pyjwt, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2026-03-13.

How severe is CVE-2026-32597?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Jpadilla Pyjwt

CVE-2026-32597

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 un…

EPSS: 0.000 (2.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Jpadilla Pyjwt — versions < 2.12.0
Pyjwt_project Pyjwt

Weakness classification (CWE)

References

https://github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9f (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
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Frequently asked questions

What is CVE-2026-32597?: CVE-2026-32597 is a high-severity vulnerability in Jpadilla Pyjwt, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2026-03-13.
How severe is CVE-2026-32597?: High severity. CVSS v3 base score is 7.5 out of 10.