Bug 2482734 (CVE-2026-48526) - CVE-2026-48526 python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens
Summary: CVE-2026-48526 python-pyjwt: PyJWT: Authentication bypass due to forged JSON ...
Keywords:
Status: NEW
Alias: CVE-2026-48526
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-28 16:01 UTC by OSIDB Bzimport
Modified: 2026-06-05 07:23 UTC (History)
78 users (show)

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Description OSIDB Bzimport 2026-05-28 16:01:45 UTC 
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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