CVE-2026-48526

Public on 2026-05-28
Modified on 2026-05-29
Description
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
Severity
Important severity
Important
See what this means
CVSS v3 Base Score
7.4
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2023 python-jwt Pending Fix

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-48526 Mitre: CVE-2026-48526