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        "text": "This update for python-PyJWT fixes the following issue:\n\nUpdate to PyJWT 2.12.1:\n\n- CVE-2026-32597: PyJWT accepts unknown `crit` header extensions (bsc#1259616).\n\nChangelog:\n\nUpdate to 2.12.1:\n\n - Add missing typing_extensions dependency for Python \u003c 3.11 in\n   #1150\n\nUpdate to 2.12.0:\n\n - Annotate PyJWKSet.keys for pyright by @tamird in #1134\n - Close HTTPError response to prevent ResourceWarning on\n   Python 3.14 by @veeceey in #1133\n - Do not keep algorithms dict in PyJWK instances by @akx in\n   #1143\n - Use PyJWK algorithm when encoding without explicit\n   algorithm in #1148\n - Docs: Add PyJWKClient API reference and document the\n   two-tier caching system (JWK Set cache and signing key LRU\n   cache).\n\nUpdate to 2.11.0:\n\n - Enforce ECDSA curve validation per RFC 7518 Section 3.4.\n - Fix build system warnings by @kurtmckee in #1105\n - Validate key against allowed types for Algorithm family in\n   #964\n - Add iterator for JWKSet in #1041\n - Validate iss claim is a string during encoding and decoding\n   by @pachewise in #1040\n - Improve typing/logic for options in decode, decode_complete\n    by @pachewise in #1045\n - Declare float supported type for lifespan and timeout by\n   @nikitagashkov in #1068\n - Fix SyntaxWarnings/DeprecationWarnings caused by invalid\n   escape sequences by @kurtmckee in #1103\n - Development: Build a shared wheel once to speed up test\n   suite setup times by @kurtmckee in #1114\n - Development: Test type annotations across all supported\n   Python versions, increase the strictness of the type\n   checking, and remove the mypy pre-commit hook by @kurtmckee\n   in #1112\n - Support Python 3.14, and test against PyPy 3.10 and 3.11 by\n   @kurtmckee in #1104\n - Development: Migrate to build to test package building in\n   CI by @kurtmckee in #1108\n - Development: Improve coverage config and eliminate unused\n   test suite code by @kurtmckee in #1115\n - Docs: Standardize CHANGELOG links to PRs by @kurtmckee in\n   #1110\n - Docs: Fix Read the Docs builds by @kurtmckee in #1111\n - Docs: Add example of using leeway with nbf by @djw8605 in\n   #1034\n - Docs: Refactored docs with autodoc; added PyJWS and\n   jwt.algorithms docs by @pachewise in #1045\n - Docs: Documentation improvements for \"sub\" and \"jti\" claims\n   by @cleder in #1088\n - Development: Add pyupgrade as a pre-commit hook by\n   @kurtmckee in #1109\n - Add minimum key length validation for HMAC and RSA keys\n   (CWE-326). Warns by default via InsecureKeyLengthWarning\n   when keys are below minimum recommended lengths per RFC\n   7518 Section 3.2 (HMAC) and NIST SP 800-131A (RSA). Pass\n   enforce_minimum_key_length=True in options to PyJWT or\n   PyJWS to raise InvalidKeyError instead.\n - Refactor PyJWT to own an internal PyJWS instance instead of\n   calling global api_jws functions.\n",
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          "text": "PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC. This vulnerability is fixed in 2.12.0.",
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