High severity7.5NVD Advisory· Published Mar 13, 2026· Updated May 5, 2026
CVE-2026-32597
CVE-2026-32597
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
PyJWTPyPI | < 2.12.0 | 2.12.0 |
Affected products
120- osv-coords118 versionspkg:apk/chainguard/airflow-2pkg:apk/chainguard/airflow-3pkg:apk/chainguard/airflow-core-2pkg:apk/chainguard/airflow-core-3pkg:apk/chainguard/authentikpkg:apk/chainguard/authentik-fipspkg:apk/chainguard/awxpkg:apk/chainguard/azpkg:apk/chainguard/datadog-agent-7.76-core-integrationspkg:apk/chainguard/datadog-agent-fips-7.76-core-integrationspkg:apk/chainguard/dbt-snowflakepkg:apk/chainguard/ggshieldpkg:apk/chainguard/keep-apipkg:apk/chainguard/keep-api-fipspkg:apk/chainguard/kserve-storage-controllerpkg:apk/chainguard/label-studiopkg:apk/chainguard/litellmpkg:apk/chainguard/metaflow-service-fipspkg:apk/chainguard/opalpkg:apk/chainguard/open-webuipkg:apk/chainguard/pgadmin4-fipspkg:apk/chainguard/py3-cassandra-medusapkg:apk/chainguard/py3-semgreppkg:apk/chainguard/request-1276pkg:apk/chainguard/superset-5.0pkg:apk/chainguard/superset-6.0pkg:apk/chainguard/vllm-openai-cuda-12.9pkg:apk/wolfi/airflow-3pkg:apk/wolfi/azpkg:apk/wolfi/datadog-agent-7.76-core-integrationspkg:apk/wolfi/ggshieldpkg:apk/wolfi/kserve-storage-controllerpkg:apk/wolfi/open-webuipkg:apk/wolfi/py3-cassandra-medusapkg:apk/wolfi/py3-semgreppkg:apk/wolfi/superset-5.0pkg:apk/wolfi/superset-6.0pkg:pypi/pyjwtpkg:rpm/almalinux/fence-agents-aliyunpkg:rpm/almalinux/fence-agents-allpkg:rpm/almalinux/fence-agents-amt-wspkg:rpm/almalinux/fence-agents-apcpkg:rpm/almalinux/fence-agents-apc-snmppkg:rpm/almalinux/fence-agents-awspkg:rpm/almalinux/fence-agents-azure-armpkg:rpm/almalinux/fence-agents-bladecenterpkg:rpm/almalinux/fence-agents-brocadepkg:rpm/almalinux/fence-agents-cisco-mdspkg:rpm/almalinux/fence-agents-cisco-ucspkg:rpm/almalinux/fence-agents-commonpkg:rpm/almalinux/fence-agents-computepkg:rpm/almalinux/fence-agents-drac5pkg:rpm/almalinux/fence-agents-eaton-snmppkg:rpm/almalinux/fence-agents-emersonpkg:rpm/almalinux/fence-agents-epspkg:rpm/almalinux/fence-agents-gcepkg:rpm/almalinux/fence-agents-heuristics-pingpkg:rpm/almalinux/fence-agents-hpbladepkg:rpm/almalinux/fence-agents-ibmbladepkg:rpm/almalinux/fence-agents-ibm-powervspkg:rpm/almalinux/fence-agents-ibm-vpcpkg:rpm/almalinux/fence-agents-ifmibpkg:rpm/almalinux/fence-agents-ilo2pkg:rpm/almalinux/fence-agents-ilo-moonshotpkg:rpm/almalinux/fence-agents-ilo-mppkg:rpm/almalinux/fence-agents-ilo-sshpkg:rpm/almalinux/fence-agents-intelmodularpkg:rpm/almalinux/fence-agents-ipdupkg:rpm/almalinux/fence-agents-ipmilanpkg:rpm/almalinux/fence-agents-kdumppkg:rpm/almalinux/fence-agents-kubevirtpkg:rpm/almalinux/fence-agents-lparpkg:rpm/almalinux/fence-agents-mpathpkg:rpm/almalinux/fence-agents-nutanix-ahvpkg:rpm/almalinux/fence-agents-openstackpkg:rpm/almalinux/fence-agents-redfishpkg:rpm/almalinux/fence-agents-rhevmpkg:rpm/almalinux/fence-agents-rsapkg:rpm/almalinux/fence-agents-rsbpkg:rpm/almalinux/fence-agents-sbdpkg:rpm/almalinux/fence-agents-scsipkg:rpm/almalinux/fence-agents-virshpkg:rpm/almalinux/fence-agents-vmware-restpkg:rpm/almalinux/fence-agents-vmware-soappkg:rpm/almalinux/fence-agents-wtipkg:rpm/almalinux/fence-agents-zvmpkg:rpm/almalinux/fence-virtpkg:rpm/almalinux/fence-virtdpkg:rpm/almalinux/fence-virtd-cpgpkg:rpm/almalinux/fence-virtd-libvirtpkg:rpm/almalinux/fence-virtd-multicastpkg:rpm/almalinux/fence-virtd-serialpkg:rpm/almalinux/fence-virtd-tcppkg:rpm/almalinux/ha-cloud-supportpkg:rpm/opensuse/python-PyJWT&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/python-PyJWT&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python-PyJWT&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/python-social-auth-core&distro=openSUSE%20Tumbleweedpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP4pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Python%203%2015%20SP7pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Micro%206.2
< 2.11.2-r2+ 117 more
- (no CPE)range: < 2.11.2-r2
- (no CPE)range: < 3.1.8-r8
- (no CPE)range: < 2.11.2-r1
- (no CPE)range: < 3.1.8-r1
- (no CPE)range: < 2026.2.1-r4
- (no CPE)range: < 2026.2.1-r3
- (no CPE)range: < 24.6.1-r31
- (no CPE)range: < 2.84.0-r3
- (no CPE)range: < 7.76.3-r26
- (no CPE)range: < 7.76.3-r24
- (no CPE)range: < 1.10.4-r2
- (no CPE)range: < 1.49.0-r2
- (no CPE)range: < 0.51.0-r0
- (no CPE)range: < 0.51.0-r0
- (no CPE)range: < 0.16.0-r22
- (no CPE)range: < 1.23.0-r0
- (no CPE)range: < 1.82.3.0-r0
- (no CPE)range: < 2.5.0-r1
- (no CPE)range: < 0.9.3-r3
- (no CPE)range: < 0.8.10-r1
- (no CPE)range: < 9.13-r1
- (no CPE)range: < 0.27.0-r5
- (no CPE)range: < 1.156.0-r0
- (no CPE)range: < 0.27.0-r6
- (no CPE)range: < 5.0.0-r20
- (no CPE)range: < 6.0.0-r4
- (no CPE)range: < 0.17.1-r1
- (no CPE)range: < 3.1.8-r8
- (no CPE)range: < 2.84.0-r3
- (no CPE)range: < 7.76.3-r26
- (no CPE)range: < 1.49.0-r2
- (no CPE)range: < 0.16.0-r22
- (no CPE)range: < 0.8.10-r1
- (no CPE)range: < 0.27.0-r5
- (no CPE)range: < 1.156.0-r0
- (no CPE)range: < 5.0.0-r20
- (no CPE)range: < 6.0.0-r4
- (no CPE)range: < 2.12.0
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.2.1-129.el8_10.25
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 4.16.0-13.el10_1.4
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.12.1-160000.1.1
- (no CPE)range: < 2.12.1-1.1
- (no CPE)range: < 4.8.7-1.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.4.0-150200.3.11.1
- (no CPE)range: < 2.4.0-150200.3.11.1
- (no CPE)range: < 1.5.3-3.19.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.12.1-160000.1.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.8.0-150400.8.10.1
- (no CPE)range: < 2.12.1-160000.1.1
- (no CPE)range: < 2.9.0-2.1
- (no CPE)range: < 2.12.1-slfo.1.1_1.1
- (no CPE)range: < 2.12.1-160000.1.1
Patches
Vulnerability mechanics
References
5- github.com/jpadilla/pyjwt/security/advisories/GHSA-752w-5fwx-jx9fnvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-752w-5fwx-jx9fghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-32597ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2026-120.yamlghsaWEB
- lists.debian.org/debian-lts-announce/2026/05/msg00008.htmlnvdWEB
News mentions
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