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High ALAS2023-2026-1842 1 CVE

Important: python-jwt security update (Amazon Linux 2023)

Published Jun 22, 2026 · Updated Jun 22, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-48526: 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.

Fixed packages 2

ReleasePackageFixed in
Amazon Linux · 2023 python3-jwt 0:2.4.0-1.amzn2023.0.4
Amazon Linux · 2023 python3-jwt+crypto 0:2.4.0-1.amzn2023.0.4

Vulnerabilities 1

  • High 7.4
    CVE-2026-48526

    PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed

    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 t…

    jpadilla pyjwt kserve-storage-controller superset-6.0 Debian Ubuntu Azure Linux Wolfi PyPI

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-48526.html