VYPR
High severity7.4NVD Advisory· Published May 28, 2026· Updated Jun 1, 2026

CVE-2026-48526

CVE-2026-48526

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
pyjwtPyPI
< 2.13.02.13.0

Affected products

61

Patches

Vulnerability mechanics

References

4

News mentions

0

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