CVE-2026-102267 json
PyJWT: PyJWKClient follows redirects when fetching JWKS
published 2026-09-28 41 d ago modified 2026-10-07 32 d ago also GHSA-9v7f-9g4p-ffgj , PYSEC-2026-4144 , EUVD-2026-88534
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT PyJWKClient is affected because redirect destinations are not revalidated against the JWKS trust boundary. This occurs when a configured trusted JWKS endpoint returns an attacker-influenced redirect. As a result, PyJWKClient follows the redirect and consumes the redirected response as key material. Consequently, forwarded credentials may be disclosed or verification keys may be substituted. This issue is fixed in version 2.14.0.
Patch / fix
- pypi pyjwt 2.14.0
- pyjwt_project pyjwt 2.14.0
- pyjwt Debian 14 2.14.0-1
debian advisories DEBIAN-CVE-2026-102267
- pyjwt Ubuntu 22.04 LTS 2.3.0-1ubuntu0.5
- pyjwt Ubuntu 24.04 LTS 2.7.0-1ubuntu0.3
- pyjwt Ubuntu 26.10 2.13.0-1ubuntu1
- pyjwt Ubuntu 26.04 LTS 2.10.1-4ubuntu1.2
ubuntu advisories UBUNTU-CVE-2026-102267
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- python-PyJWT SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +9 more 2.8.0-150400.8.20.1
- python-PyJWT Linux Micro 6.1 2.12.1-slfo.1.1_3.1
- python-PyJWT SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.12.1-160000.3.1
- python-PyJWT Linux Micro 6.0 2.9.0-159998.1.1
suse advisories SUSE-SU-2026:5064-1SUSE-SU-2026:24377-1SUSE-SU-2026:24126-1SUSE-SU-2026:24219-1SUSE-SU-2026:24134-1
- python-PyJWT openSUSE Leap 16.0 2.12.1-160000.3.1
opensuse advisories openSUSE-SU-2026:22074-1
- fence-virt AlmaLinux 9 4.10.0-110.el9_8.8
- fence-agents-all AlmaLinux 9 4.10.0-110.el9_8.8
- fence-agents-apc AlmaLinux 9 4.10.0-110.el9_8.8
- fence-agents-aws AlmaLinux 9 4.10.0-110.el9_8.8
- fence-agents-gce AlmaLinux 9 4.10.0-110.el9_8.8
- fence-agents-rsa AlmaLinux 9 4.10.0-110.el9_8.8
- ha-cloud-support AlmaLinux 9 4.10.0-110.el9_8.8
- fence-agents-lpar AlmaLinux 9 4.10.0-110.el9_8.8
almalinux advisories ALSA-2026:94500ALSA-2026:94501
- fence-agents Rocky Linux 10 4.16.0-21.el10_2.7
- fence-agents Rocky Linux 9 4.10.0-110.el9_8.8
rocky linux advisories RLSA-2026:94501RLSA-2026:94500
- python-jwt Azure Linux 3.0 2.15.1-1
azure linux advisories AZL-104979
Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-102267 updated cvss 7.4
pyjwt: pyjwt: Verification key substitution via unvalidated JWKS redirects
-
Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-backend-rhel9 Red Hat Fence Agents Remediation Operator workload-availability/fence-agents-remediation-rhel9-operator Red Hat Lightspeed Core lightspeed-core/rag-tool-cpu-rhel9, lightspeed-core/lightspeed-stack-rhel9, lightspeed-core/rag-tool-cuda-12.9-rhel9 Red Hat Migration Toolkit for Applications 8 mta/mta-solution-server-rhel9affected: workaround, no fix available
-
Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-ocp-rag-rhel9, openshift-lightspeed/lightspeed-to-dataverse-exporter-rhel9affected: workaround, no fix available, no fix planned “Will not fix”
-
Red Hat AI Inference Server rhaii/vllm-tpu-rhel9, rhaii/vllm-neuron-rhel9affected: workaround, no fix planned “Will not fix”
-
Red Hat Ansible Automation Platform 2 automation-controller, ansible-automation-platform-25/hub-rhel8, ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-27/hub-rhel9, ansible-automation-platform-26/mcp-tools-rhel9, ansible-automation-platform-27/mcp-tools-rhel9, +4 moreaffected: workaround, no fix available, no fix planned “Will not fix”
-
Red Hat Ceph Storage 4 python2-jwt, rhceph/rhceph-4-rhel8 Red Hat Ceph Storage 7 rhceph/rhceph-7-rhel9 Red Hat Ceph Storage 9 rhceph/rhceph-9-rhel9affected: workaround, no fix available “Fix deferred”
-
Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-gaudi-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-ogx-core-rhel9, rhoai/odh-feature-server-rhel9, rhoai/odh-llm-d-kv-cache-rhel9, rhoai/odh-llama-stack-core-rhel9, rhoai/odh-th-torch-cuda-py312-rhel9, rhoai/odh-kserve-autogluon-server-rhel9, +17 more Red Hat OpenShift Container Platform 4 openshift4/ose-ironic-rhel9, openshift4/ose-ansible-operator Red Hat OpenStack Platform 13 (Queens) python-jwt Red Hat OpenStack Platform 16.2 rhosp-rhel8/openstack-tempest, rhosp-rhel8/openstack-keystone, rhosp-rhel8/openstack-cinder-api, rhosp-rhel8/openstack-mistral-api, rhosp-rhel8/openstack-mistral-base, rhosp-rhel8/openstack-mistral-engine, +2 more Red Hat OpenStack Platform 17.1 python3-jwt, rhosp-rhel9/openstack-keystone, rhosp-rhel9/openstack-cinder-apiaffected: workaround, no fix available
+4 more productsfewer
Red Hat OpenStack Platform 18.0 python-jwt, rhoso/openstack-keystone-rhel9, rhoso/openstack-cinder-api-rhel9 Red Hat Quay 3 quay/quay-rhel8, quay/quay-rhel9 Red Hat Satellite 6 python-pyjwt, python3-pyjwt, python3.12-pyjwt Red Hat Update Infrastructure 5 rhui5/rhua-rhel9, rhui5/rhua-tp-rhel9 -
Red Hat AI Inference Server 3.5 rhaii/vllm-cpu-rhel9 1791473614, rhaii/vllm-cuda-rhel9 1791473631, rhaii/vllm-rocm-rhel9 1791425869, rhaii/vllm-gaudi-rhel9 1791427182, rhaii/vllm-spyre-rhel9 1791818357fixed: vendor fix RHSA-2026:82415
-
Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/gateway-rhel9 1791971533, ansible-automation-platform-26/lightspeed-rhel9 1791898403, ansible-automation-platform-26/ee-supported-rhel9 1791974220, ansible-automation-platform-tech-preview/metrics-service-rhel9 1791944819fixed: vendor fix RHSA-2026:87120
show 18 moreshow fewer
-
Red Hat Ansible Automation Platform 2.6 for RHEL 9 python3.12-pyjwt 2.14.0-1.el9ap, python3.12-pyjwt+crypto 2.14.0-1.el9apfixed: vendor fix RHSA-2026:87004
-
Red Hat Ansible Automation Platform 2.7 ansible-automation-platform-27/gateway-rhel9 1792429216, ansible-automation-platform-27/lightspeed-rhel9 1792141386, ansible-automation-platform-27/metrics-service-rhel9 1792387216, ansible-automation-platform-27/lightspeed-chatbot-rhel9 1792385971fixed: vendor fix RHSA-2026:87124
-
Red Hat Enterprise Linux AI 3.5 rhelai3/bootc-cuda-rhel9 1793135861, rhelai3/bootc-rocm-rhel9 1793135863, rhelai3/bootc-aws-cuda-rhel9 1793194817, rhelai3/bootc-gcp-cuda-rhel9 1793194815, rhelai3/disk-image-cuda-rhel9 1793206758, rhelai3/bootc-azure-cuda-rhel9 1793194815, +1 morefixed: vendor fix RHSA-2026:92452
-
Red Hat Enterprise Linux AppStream (v. 9) fence-virt 4.10.0-110.el9_8.8, fence-virtd 4.10.0-110.el9_8.8, fence-agents 4.10.0-110.el9_8.8, fence-virtd-cpg 4.10.0-110.el9_8.8, fence-virtd-tcp 4.10.0-110.el9_8.8, fence-agents-all 4.10.0-110.el9_8.8, +51 morefixed: vendor fix RHSA-2026:94500
-
Red Hat Enterprise Linux AppStream (v. 10) fence-virt 4.16.0-21.el10_2.7, fence-virtd 4.16.0-21.el10_2.7, fence-agents 4.16.0-21.el10_2.7, fence-virtd-cpg 4.16.0-21.el10_2.7, fence-virtd-tcp 4.16.0-21.el10_2.7, fence-agents-all 4.16.0-21.el10_2.7, +50 morefixed: vendor fix RHSA-2026:94501
-
Red Hat Enterprise Linux AppStream E4S (v.9.2) fence-virt 4.10.0-43.el9_2.27, fence-virtd 4.10.0-43.el9_2.27, fence-agents 4.10.0-43.el9_2.27, fence-virtd-cpg 4.10.0-43.el9_2.27, fence-virtd-tcp 4.10.0-43.el9_2.27, fence-agents-virsh 4.10.0-43.el9_2.27, +8 morefixed: vendor fix RHSA-2026:94634
-
Red Hat Enterprise Linux AppStream E4S (v.9.4) fence-virt 4.10.0-62.el9_4.31, fence-virtd 4.10.0-62.el9_4.31, fence-agents 4.10.0-62.el9_4.31, fence-virtd-cpg 4.10.0-62.el9_4.31, fence-virtd-tcp 4.10.0-62.el9_4.31, fence-agents-virsh 4.10.0-62.el9_4.31, +8 morefixed: vendor fix RHSA-2026:94557
-
Red Hat Enterprise Linux AppStream EUS (v. 10.0) fence-virt 4.16.0-5.el10_0.14, fence-virtd 4.16.0-5.el10_0.14, fence-agents 4.16.0-5.el10_0.14, fence-virtd-cpg 4.16.0-5.el10_0.14, fence-virtd-tcp 4.16.0-5.el10_0.14, fence-agents-all 4.16.0-5.el10_0.14, +50 morefixed: vendor fix RHSA-2026:95012
-
Red Hat Enterprise Linux AppStream EUS (v.9.6) fence-virt 4.10.0-86.el9_6.23, fence-virtd 4.10.0-86.el9_6.23, fence-agents 4.10.0-86.el9_6.23, fence-virtd-cpg 4.10.0-86.el9_6.23, fence-virtd-tcp 4.10.0-86.el9_6.23, fence-agents-all 4.10.0-86.el9_6.23, +51 morefixed: vendor fix RHSA-2026:94523
-
Red Hat Enterprise Linux High Availability E4S (v.9.2) fence-agents-all 4.10.0-43.el9_2.27, fence-agents-apc 4.10.0-43.el9_2.27, fence-agents-aws 4.10.0-43.el9_2.27, fence-agents-eps 4.10.0-43.el9_2.27, fence-agents-gce 4.10.0-43.el9_2.27, fence-agents-rsa 4.10.0-43.el9_2.27, +37 morefixed: vendor fix RHSA-2026:94634
-
Red Hat Enterprise Linux High Availability E4S (v.9.4) fence-agents-all 4.10.0-62.el9_4.31, fence-agents-apc 4.10.0-62.el9_4.31, fence-agents-aws 4.10.0-62.el9_4.31, fence-agents-eps 4.10.0-62.el9_4.31, fence-agents-gce 4.10.0-62.el9_4.31, fence-agents-rsa 4.10.0-62.el9_4.31, +37 morefixed: vendor fix RHSA-2026:94557
-
Red Hat Enterprise Linux Resilient Storage E4S (v.9.2) fence-agents-all 4.10.0-43.el9_2.27, fence-agents-apc 4.10.0-43.el9_2.27, fence-agents-aws 4.10.0-43.el9_2.27, fence-agents-eps 4.10.0-43.el9_2.27, fence-agents-gce 4.10.0-43.el9_2.27, fence-agents-rsa 4.10.0-43.el9_2.27, +36 morefixed: vendor fix RHSA-2026:94634
-
Red Hat Enterprise Linux Resilient Storage E4S (v.9.4) fence-agents-all 4.10.0-62.el9_4.31, fence-agents-apc 4.10.0-62.el9_4.31, fence-agents-aws 4.10.0-62.el9_4.31, fence-agents-eps 4.10.0-62.el9_4.31, fence-agents-gce 4.10.0-62.el9_4.31, fence-agents-rsa 4.10.0-62.el9_4.31, +36 morefixed: vendor fix RHSA-2026:94557
-
Red Hat OpenShift AI 3.4 rhoai/odh-kserve-agent-rhel9 1792685313, rhoai/odh-kserve-router-rhel9 1792688864, rhoai/odh-kserve-controller-rhel9 1792685196, rhoai/odh-kserve-storage-initializer-rhel9 1792685067fixed: vendor fix RHSA-2026:92510
-
Red Hat Satellite 6.18 satellite/foreman-mcp-server-rhel9 1793272276, satellite/iop-host-inventory-rhel9 1793248583fixed: vendor fix RHSA-2026:92667
-
Red Hat Satellite 6.19 satellite/foreman-mcp-server-rhel9 1793272279, satellite/iop-host-inventory-rhel9 1793248689fixed: vendor fix RHSA-2026:92666
-
Red Hat Trusted Artifact Signer 1.4 rhtas/model-transparency-rhel9 1792402739fixed: vendor fix RHSA-2026:84785
-
Red Hat Trusted Artifact Signer 1.5 rhtas/rh-sigstore-a2a-rhel9 1793624122fixed: vendor fix RHSA-2026:95267
17 more not affected in the full advisory
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 38 d ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| OSV | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | pyjwt | <2.14.0 |
2.14.0 |
Affected products
- jpadilla pyjwt
Classification
References
-
github.com
/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56
web, patch
-
github.com
/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj
web, patch, vendor-advisory
-
github.com
/jpadilla/pyjwt/releases/tag/2.14.0
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-102267
advisory
-
github.com
/jpadilla/pyjwt
package
-
pypi.org
/project/pyjwt
package
-
github.com
/advisories/GHSA-9v7f-9g4p-ffgj
advisory
Sources
- CVE List CVE-2026-102267
- GitHub Advisory GHSA-9v7f-9g4p-ffgj
- NVD CVE-2026-102267
- OSV PYSEC-2026-4144
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.