CRITICAL9.8
PYSEC-2026-2118
Quick fix
PYSEC-2026-2118 — authlib: upgrade to the fixed version with the command below.
pip install --upgrade 'authlib>=1.6.7'Details
Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application code when a failure was expected.. This issue has been patched in version 1.6.7.
Are you affected?
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Affected packages
References
- https://access.redhat.com/security/cve/CVE-2026-28802[WEB]
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28802.json[WEB]
- https://access.redhat.com/errata/RHSA-2026:19375[ADVISORY]
- https://access.redhat.com/errata/RHSA-2026:4942[ADVISORY]
- https://access.redhat.com/errata/RHSA-2026:5168[ADVISORY]
- https://access.redhat.com/errata/RHSA-2026:5665[ADVISORY]
- https://access.redhat.com/errata/RHSA-2026:6309[ADVISORY]
- https://access.redhat.com/errata/RHSA-2026:6568[ADVISORY]
- https://bugzilla.redhat.com/show_bug.cgi?id=2445120[REPORT]
- https://github.com/authlib/authlib/commit/a61c2acb807496e67f32051b5f1b1d5ccf8f0a75[FIX]
- https://github.com/authlib/authlib/commit/b87c32ed07b8ae7f805873e1c9cafd1016761df7[FIX]
- https://github.com/authlib/authlib/security/advisories/GHSA-7wc2-qxgw-g8gg[EVIDENCE]