Description
PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorithms are supported. The application can specify `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be explicit with the algorithms that are accepted and expected when decoding.
References (6)
Core 6
Core References
Issue Tracking, Third Party Advisory x_refsource_confirm
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-ffqj-6fqr-9h24
Patch, Third Party Advisory x_refsource_misc
https://github.com/jpadilla/pyjwt/commit/9c528670c455b8d948aff95ed50e22940d1ad3fc
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/jpadilla/pyjwt/releases/tag/2.4.0
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HIYEYZRQEP6QTHT3EHH3RGFYJIHIMAO/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5PK7IQCBVNLYJEFTPHBBPFP72H4WUFNX/
Scores
CVSS v3
7.4
EPSS
0.0042
EPSS Percentile
62.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-327
Status
published
Products (4)
fedoraproject/fedora
35
fedoraproject/fedora
36
pyjwt_project/pyjwt
1.5.0 - 2.4.0
pypi/pyjwt
1.5.0 - 2.4.0PyPI
Published
May 24, 2022
Tracked Since
Feb 18, 2026