tocsin

PyPI/pyjwt CVE-2026-48523: medium 5.4, EPSS 0.17%

PyJWT is a JSON Web Token implementation in Python. From 2.9.0 to 2.12.1, there is a verifier-side algorithm allow-list bypass when jwt.decode() or jwt.decode_complete() are called with a PyJWK key. T

Action: Upgrade pyjwt to 2.12.1 or later.

pip install pyjwt==2.12.1

Affected

introducedfixedlast affected
2.9.02.12.1-

Fixed versions

2.12.1

Sources

CVE-2026-48523 · published · modified · JSON