CVE-2026-48526

CVSS Score & Metrics

Base Score

7.4 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

May 28, 2026

Last Modified

June 15, 2026

CWE ID

CWE-287

Source

NVD

Vendor

jpadilla

Product

pyjwt

External References

https://github.com/jpadilla/pyjwt/security/advisories/GHSA-xgmm-8j9v-c9wx

CVSS Score & Metrics

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