🛡️ SUSE-SU-2026:20879-1 — python-pyjwt (CVE-2024-53861 +1 more)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Security update for python-PyJWT

This update for python-PyJWT fixes the following issues:

Update to PyJWT 2.12.1:

  • CVE-2024-53861: prevent partial matching of the Issuer field (bsc#1234038).
  • CVE-2026-32597: validate the crit Header Parameter defined in RFC 7515 (bsc#1259616).

Changelog:

Update to 2.12.1:

  • Add missing typing_extensions dependency for Python < 3.11 in

#1150

Update to 2.12.0:

  • Annotate PyJWKSet.keys for pyright by @tamird in #1134
  • Close HTTPError response to prevent ResourceWarning on

Python 3.14 by @veeceey in #1133

  • Do not keep algorithms dict in PyJWK instances by @akx in

#1143

  • Use PyJWK algorithm when encoding without explicit

algorithm in #1148

  • Docs: Add PyJWKClient API reference and document the

two-tier caching system (JWK Set cache and signing key LRU

cache).

Update to 2.11.0:

  • Enforce ECDSA curve validation per RFC 7518 Section 3.4.
  • Fix build system warnings by @kurtmckee in #1105
  • Validate key against allowed types for Algorithm family in

#964

  • Add iterator for JWKSet in #1041
  • Validate iss claim is a string during encoding and decoding

by @pachewise in #1040

  • Improve typing/logic for options in decode, decode_complete

by @pachewise in #1045

  • Declare float supported type for lifespan and timeout by

@nikitagashkov in #1068

  • Fix SyntaxWarnings/DeprecationWarnings caused by invalid

escape sequences by @kurtmckee in #1103

  • Development: Build a shared wheel once to speed up test

suite setup times by @kurtmckee in #1114

  • Development: Test type annotations across all supported

Python versions, increase the strictness of the type

checking, and remove the mypy pre-commit hook by @kurtmckee

in #1112

  • Support Python 3.14, and test against PyPy 3.10 and 3.11 by

@kurtmckee in #1104

  • Development: Migrate to build to test package building in

CI by @kurtmckee in #1108

  • Development: Improve coverage config and eliminate unused

test suite code by @kurtmckee in #1115

  • Docs: Standardize CHANGELOG links to PRs by @kurtmckee in

#1110

  • Docs: Fix Read the Docs builds by @kurtmckee in #1111
  • Docs: Add example of using leeway with nbf by @djw8605 in

#1034

  • Docs: Refactored docs with autodoc; added PyJWS and

jwt.algorithms docs by @pachewise in #1045

  • Docs: Documentation improvements for "sub" and "jti" claims

by @cleder in #1088

  • Development: Add pyupgrade as a pre-commit hook by

@kurtmckee in #1109

  • Add minimum key length validation for HMAC and RSA keys

(CWE-326). Warns by default via InsecureKeyLengthWarning

when keys are below minimum recommended lengths per RFC

7518 Section 3.2 (HMAC) and NIST SP 800-131A (RSA). Pass

enforce_minimum_key_length=True in options to PyJWT or

PyJWS to raise InvalidKeyError instead.

  • Refactor PyJWT to own an internal PyJWS instance instead of

calling global api_jws functions.

Update to 2.10.0:

  • chore: use sequence for typing rather than list
  • Add support for Python 3.13
  • [pre-commit.ci] pre-commit autoupdate
  • Add an RTD config file to resolve RTD build failures
  • docs: Update iat exception docs
  • Remove algorithm requirement for JWT API
  • Create SECURITY.md
  • docs fix: decode_complete scope and algorithms
  • fix doctest for docs/usage.rst
  • fix test_utils.py not to xfail
  • Correct jwt.decode audience param doc expression
  • Add PS256 encoding and decoding usage
  • Add API docs for PyJWK
  • Refactor project configuration files from setup.cfg to pyproject.toml PEP-518
  • Add JWK support to JWT encode
  • Update pre-commit hooks to lint pyproject.toml
  • Add EdDSA algorithm encoding/decoding usage
  • Ruff linter and formatter changes
  • Validate sub and jti claims for the token
  • Add ES256 usage
  • Encode EC keys with a fixed bit length
  • Drop support for Python 3.8
  • Prepare 2.10.0 release
  • Bump codecov/codecov-action from 4 to 5

Affected software

SUSE-SU-2026:20879-1 is recorded against 1 package.

  • python-pyjwt (fixed in 2.12.1-slfo.1.1_1.1)

Timeline and source

Published on 26 March 2026 and last revised on 31 March 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.suse.com (Advisory)
bugzilla.suse.com (Report)
bugzilla.suse.com (Report)
www.suse.com (Web)
www.suse.com (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-03-26
Updated 2026-08-20
Modified 2026-03-31
Fix URL N/A

Affected Packages

Software From version Fixed in
python-pyjwt 2.12.1-slfo.1.1_1.1

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