High severity7.4NVD Advisory· Published May 28, 2026· Updated Jun 1, 2026
CVE-2026-48526
CVE-2026-48526
Description
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
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 | < 2.13.0 | 2.13.0 |
Affected products
61- osv-coords59 versionspkg:apk/chainguard/airflow-core-3pkg:apk/chainguard/airflow-postgres-fips-3pkg:apk/chainguard/awxpkg:apk/chainguard/datadog-agent-7.76-core-integrationspkg:apk/chainguard/datadog-agent-7.77-core-integrationspkg:apk/chainguard/datadog-agent-7.78-core-integrationspkg:apk/chainguard/datadog-agent-7.79-core-integrationspkg:apk/chainguard/datadog-agent-fips-7.76-core-integrationspkg:apk/chainguard/datadog-agent-fips-7.77-core-integrationspkg:apk/chainguard/datadog-agent-fips-7.78-core-integrationspkg:apk/chainguard/datadog-agent-fips-7.79-core-integrationspkg:apk/chainguard/ggshieldpkg:apk/chainguard/kserve-storage-controllerpkg:apk/chainguard/litellmpkg:apk/chainguard/metaflow-service-fipspkg:apk/chainguard/netboxpkg:apk/chainguard/netbox-fipspkg:apk/chainguard/openstack-glance-2025.1pkg:apk/chainguard/openstack-glance-2025.1-fipspkg:apk/chainguard/openstack-glance-2025.2pkg:apk/chainguard/openstack-glance-2025.2-fipspkg:apk/chainguard/openstack-glance-2026.1pkg:apk/chainguard/openstack-glance-2026.1-fipspkg:apk/chainguard/openstack-horizon-2025.1pkg:apk/chainguard/openstack-horizon-2025.1-fipspkg:apk/chainguard/openstack-horizon-2025.2pkg:apk/chainguard/openstack-horizon-2025.2-fipspkg:apk/chainguard/openstack-horizon-2026.1pkg:apk/chainguard/openstack-horizon-2026.1-fipspkg:apk/chainguard/openstack-keystone-2025.1pkg:apk/chainguard/openstack-keystone-2025.1-fipspkg:apk/chainguard/openstack-keystone-2025.2pkg:apk/chainguard/openstack-keystone-2025.2-fipspkg:apk/chainguard/openstack-keystone-2026.1pkg:apk/chainguard/openstack-keystone-2026.1-fipspkg:apk/chainguard/openstack-placement-2025.1pkg:apk/chainguard/openstack-placement-2025.1-fipspkg:apk/chainguard/openstack-placement-2025.2pkg:apk/chainguard/openstack-placement-2025.2-fipspkg:apk/chainguard/openstack-placement-2026.1pkg:apk/chainguard/openstack-placement-2026.1-fipspkg:apk/chainguard/superset-5.0pkg:apk/chainguard/superset-6.1pkg:apk/chainguard/superset-fips-6.1pkg:apk/chainguard/wazuh-manager-frameworkpkg:apk/chainguard/wazuh-manager-framework-fipspkg:apk/wolfi/datadog-agent-7.76-core-integrationspkg:apk/wolfi/datadog-agent-7.77-core-integrationspkg:apk/wolfi/datadog-agent-7.78-core-integrationspkg:apk/wolfi/datadog-agent-7.79-core-integrationspkg:apk/wolfi/ggshieldpkg:apk/wolfi/kserve-storage-controllerpkg:apk/wolfi/superset-5.0pkg:apk/wolfi/superset-6.1pkg:rpm/opensuse/python-PyJWT&distro=openSUSE%20Tumbleweedpkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/python-PyJWT&distro=SUSE%20Linux%20Micro%206.2
< 3.2.2-r5+ 58 more
- (no CPE)range: < 3.2.2-r5
- (no CPE)range: < 3.2.2-r3
- (no CPE)range: < 24.6.1-r41
- (no CPE)range: < 7.76.3-r26
- (no CPE)range: < 7.77.3-r16
- (no CPE)range: < 7.78.4-r10
- (no CPE)range: < 7.79.2-r6
- (no CPE)range: < 7.76.3-r24
- (no CPE)range: < 7.77.3-r17
- (no CPE)range: < 7.78.4-r8
- (no CPE)range: < 7.79.2-r2
- (no CPE)range: < 1.52.2-r1
- (no CPE)range: < 0.19.0-r2
- (no CPE)range: < 1.89.0-r4
- (no CPE)range: < 2.5.0-r5
- (no CPE)range: < 4.6.3-r2
- (no CPE)range: < 4.6.3-r2
- (no CPE)range: < 30.2.0_git20260616-r1
- (no CPE)range: < 30.2.0_git20260511-r5
- (no CPE)range: < 31.1.0_git20260617-r1
- (no CPE)range: < 31.1.0_git20260617-r0
- (no CPE)range: < 32.0.0_git20260617-r1
- (no CPE)range: < 32.0.0_git20260617-r1
- (no CPE)range: < 25.3.2_git20260617-r1
- (no CPE)range: < 25.3.2_git20260617-r0
- (no CPE)range: < 25.5.2_git20260617-r2
- (no CPE)range: < 25.5.2_git20260617-r1
- (no CPE)range: < 25.7.3_git20260624-r1
- (no CPE)range: < 25.7.3_git20260611-r3
- (no CPE)range: < 27.0.1_git20260618-r4
- (no CPE)range: < 27.0.1_git20260618-r2
- (no CPE)range: < 28.0.1_git20260618-r3
- (no CPE)range: < 28.0.1_git20260616-r1
- (no CPE)range: < 29.0.1_git20260616-r4
- (no CPE)range: < 29.0.1_git20260603-r6
- (no CPE)range: < 13.0.0_git20260617-r2
- (no CPE)range: < 13.0.0_git20260617-r1
- (no CPE)range: < 14.0.0_git20260617-r2
- (no CPE)range: < 14.0.0_git20260309-r1
- (no CPE)range: < 15.0.0_git20260617-r2
- (no CPE)range: < 15.0.0_git20260311-r1
- (no CPE)range: < 5.0.0-r26
- (no CPE)range: < 6.1.0-r2
- (no CPE)range: < 6.1.0-r1
- (no CPE)range: < 4.14.5-r5
- (no CPE)range: < 4.14.5-r5
- (no CPE)range: < 7.76.3-r26
- (no CPE)range: < 7.77.3-r16
- (no CPE)range: < 7.78.4-r10
- (no CPE)range: < 7.79.2-r6
- (no CPE)range: < 1.52.2-r1
- (no CPE)range: < 0.19.0-r2
- (no CPE)range: < 5.0.0-r26
- (no CPE)range: < 6.1.0-r2
- (no CPE)range: < 2.13.0-1.1
- (no CPE)range: < 2.12.1-160000.2.1
- (no CPE)range: < 2.12.1-160000.2.1
- (no CPE)range: < 2.12.1-slfo.1.1_2.1
- (no CPE)range: < 2.12.1-160000.2.1
Patches
Vulnerability mechanics
References
4- github.com/jpadilla/pyjwt/security/advisories/GHSA-xgmm-8j9v-c9wxnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-xgmm-8j9v-c9wxghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-48526ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/pyjwt/PYSEC-2026-179.yamlghsaWEB
News mentions
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