ESB-2026.3087 — Vulnetix

ESB-2026.3087 PUBLISHED CVSS 7.5 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3087 Security update for python-PyJWT 30 March 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: python-PyJWT Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-32597 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-202620839-1 Comment: CVSS (Max): 7.5 CVE-2026-32597 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N EPSS (Max): 0.0% (0th) CVE-2026-32597 2026-03-29 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for python-PyJWT Announcement ID: SUSE-SU-2026:20839-1 Release Date: 2026-03-25T18:07:39Z Rating: important References: o bsc#1259616 Cross-References: o CVE-2026-32597 o CVE-2026-32597 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N /UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N o CVE-2026-32597 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N CVSS scores: /S:U/C:N/I:H/A:N o CVE-2026-32597 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:H/A:N Affected o SUSE Linux Micro 6.2 Products: An update that solves one vulnerability can now be installed. Description: This update for python-PyJWT fixes the following issue: Update to PyJWT 2.12.1: o CVE-2026-32597: PyJWT accepts unknown crit header extensions (bsc#1259616). Changelog: Update to 2.12.1: o Add missing typing_extensions dependency for Python < 3.11 in #1150 Update to 2.12.0: o Annotate PyJWKSet.keys for pyright by @tamird in #1134 o Close HTTPError response to prevent ResourceWarning on Python 3.14 by @veeceey in #1133 o Do not keep algorithms dict in PyJWK instances by @akx in #1143 o Use PyJWK algorithm when encoding without explicit algorithm in #1148 o 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: o Enforce ECDSA curve validation per RFC 7518 Section 3.4. o Fix build system warnings by @kurtmckee in #1105 o Validate key against allowed types for Algorithm family in #964 o Add iterator for JWKSet in #1041 o Validate iss claim is a string during encoding and decoding by @pachewise in #1040 o Improve typing/logic for options in decode, decode_complete by @pachewise in #1045 o Declare float supported type for lifespan and timeout by @nikitagashkov in #1068 o Fix SyntaxWarnings/DeprecationWarnings caused by invalid escape sequences by @kurtmckee in #1103 o Development: Build a shared wheel once to speed up test suite setup times by @kurtmckee in #1114 o 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 o Support Python 3.14, and test against PyPy 3.10 and 3.11 by @kurtmckee in # 1104 o Development: Migrate to build to test package building in CI by @kurtmckee in #1108 o Development: Improve coverage config and eliminate unused test suite code by @kurtmckee in #1115 o Docs: Standardize CHANGELOG links to PRs by @kurtmckee in #1110 o Docs: Fix Read the Docs builds by @kurtmckee in #1111 o Docs: Add example of using leeway with nbf by @djw8605 in #1034 o Docs: Refactored docs with autodoc; added PyJWS and jwt.algorithms docs by @pachewise in #1045 o Docs: Documentation improvements for "sub" and "jti" claims by @cleder in # 1088 o Development: Add pyupgrade as a pre-commit hook by @kurtmckee in #1109 o 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. o Refactor PyJWT to own an internal PyJWS instance instead of calling global api_jws functions. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: o SUSE Linux Micro 6.2 zypper in -t patch SUSE-SL-Micro-6.2-445=1 Package List: o SUSE Linux Micro 6.2 (noarch) python313-PyJWT-2.12.1-160000.1.1 References: o https://www.suse.com/security/cve/CVE-2026-32597.html o https://bugzilla.suse.com/show_bug.cgi?id=1259616 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Products

Vendor	Product	Versions
SUSE	python-PyJWT

Timeline

Mar 30, 2026 CVE Published

References

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