Vulnerability · Published Sep 28, 2026 · Assigned by GitHub_M
CVE-2026-102267PyJWT: PyJWKClient follows redirects when fetching JWKS
High 7.4
In plain English
A high-severity information exposure in pyjwt from jpadilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.2%top 94.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | fence-agents-aliyun | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-aliyun | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-all | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-all | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-amt-ws | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-amt-ws | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-apc | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-apc | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-apc-snmp | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-apc-snmp | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-aws | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-aws | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-azure-arm | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-azure-arm | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-bladecenter | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-bladecenter | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-brocade | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-cisco-mds | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-cisco-ucs | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-cisco-ucs | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-common | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-common | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:9 | fence-agents-compute | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-drac5 | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-drac5 | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-eaton-snmp | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-emerson | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-eps | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-gce | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-gce | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-heuristics-ping | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-hpblade | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-hpblade | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ibm-powervs | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-ibm-powervs | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ibm-vpc | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-ibm-vpc | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ibmblade | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-ibmblade | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ifmib | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-ifmib | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ilo-moonshot | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-ilo-moonshot | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ilo-mp | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-ilo-mp | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-ilo-ssh | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-ilo2 | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-intelmodular | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-ipdu | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-ipmilan | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-kdump | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-kdump | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-kubevirt | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-kubevirt | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-lpar | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-lpar | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-mpath | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-mpath | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-nutanix-ahv | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-nutanix-ahv | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-openstack | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-openstack | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-redfish | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-redfish | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-rhevm | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-rhevm | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-rsa | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-rsa | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-rsb | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-sbd | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-scsi | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-scsi | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-virsh | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-virsh | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-vmware-rest | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-agents-vmware-rest | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-agents-vmware-soap | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-wti | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-agents-zvm | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-virt | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-virt | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-virtd | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-virtd-cpg | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | fence-virtd-libvirt | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-virtd-libvirt | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-virtd-multicast | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-virtd-multicast | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-virtd-serial | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | fence-virtd-serial | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| AlmaLinux:10 | fence-virtd-tcp | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:10 | ha-cloud-support | 4.16.0-21.el10_2.7 | ALSA-2026:94501 |
| AlmaLinux:9 | ha-cloud-support | 4.10.0-110.el9_8.8 | ALSA-2026:94500 |
| Debian:12 | pyjwt | no fix listed | DEBIAN-CVE-2026-102267 |
| Debian:13 | pyjwt | no fix listed | DEBIAN-CVE-2026-102267 |
| Debian:14 | pyjwt | 2.14.0-1 | DEBIAN-CVE-2026-102267 |
| PyPI | pyjwt | 2.14.0 | GHSA-9v7f-9g4p-ffgj |
| PyPI | pyjwt | 2.14.0 | PYSEC-2026-4144 |
| Rocky Linux:10 | fence-agents | 0:4.16.0-21.el10_2.7 | RLSA-2026:94501 |
| Rocky Linux:9 | fence-agents | 0:4.10.0-110.el9_8.8 | RLSA-2026:94500 |
| Ubuntu:22.04:LTS | pyjwt | 2.3.0-1ubuntu0.5 | UBUNTU-CVE-2026-102267 |
| Ubuntu:22.04:LTS | pyjwt | 2.3.0-1ubuntu0.5 | USN-8916-1 |
| Ubuntu:24.04:LTS | pyjwt | 2.7.0-1ubuntu0.3 | USN-8916-1 |
| Ubuntu:24.04:LTS | pyjwt | 2.7.0-1ubuntu0.3 | UBUNTU-CVE-2026-102267 |
| Ubuntu:26.04:LTS | pyjwt | 2.10.1-4ubuntu1.2 | USN-8916-1 |
| Ubuntu:26.04:LTS | pyjwt | 2.10.1-4ubuntu1.2 | UBUNTU-CVE-2026-102267 |
| Ubuntu:26.10 | pyjwt | 2.13.0-1ubuntu1 | UBUNTU-CVE-2026-102267 |
| Ubuntu:26.10 | pyjwt | 2.13.0-1ubuntu1 | USN-8916-2 |
Affected products (as reported)
Weakness: CWE-200, CWE-345, CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9v7f-9g4p-ffgj x_refsource_CONFIRM
- https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56 x_refsource_MISC
- https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 x_refsource_MISC