Public proof of conceptFix available

CVE-2026-102274

Q: Is CVE-2026-102274 actively exploited?

A proof-of-concept exploit exists for CVE-2026-102274, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2026-102274?

CVE-2026-102274 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

A public proof of concept exists; no exploitation attested.

Published2026-09-28
Fixed in2.14.0
WeaknessCWE-755

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

PyJWT is a Python implementation of JSON Web Token standards. From 2.9.0 until 2.14.0, PyJWKSet does not catch the plain ValueError raised for malformed RSA JWK components by RSAAlgorithm.from_jwk in jwt/api_jwk.py. This occurs when a JWK Set contains a malformed RSA key alongside otherwise usable keys. As a result, one malformed member aborts construction of the entire PyJWKSet. Consequently, applications can experience authentication failures or request-level denial of service. This issue is fixed in version 2.14.0.

Timeline

dates in UTC

2026-09-2821:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-102274?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-102274?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Pyjwt project pyjwt

Branch	Affected	Fixed in	Source
2.x	≥ 2.9.0, < 2.14.0	2.14.0	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2026-102274 Red Hat Product Security8 products fixed · 202 known affected
pyjwt: pyjwt: Denial of Service via malformed RSA key in JWK set
ansible-automation-platform/automation-orchestrator-backend-rhel9 as a component of Ansible Automation Orchestrator 2026 · openshift-sandboxed-containers/osc-podvm-builder-rhel9 as a component of Confidential Compute Attestation · workload-availability/fence-agents-remediation-rhel9-operator as a component of Fence Agents Remediation Operator · +199 more
RHSA-2026:82415 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cpu)
RHSA-2026:82371 Red Hat Product Security3 products fixed
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (spyre)
RHSA-2026:82368 Red Hat Product Security2 products fixed
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (cuda)
RHSA-2026:82061 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat AI Inference Tech Preview 3.5.2 (Gaudi)
RHSA-2026:82059 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat AI Inference 3.5.2 (ROCm)

Full record on NVD

Fix

Update Pyjwt project pyjwt to 2.14.0
Vendor fix Red Hat Product Security RHSA-2026:82415 · 1 productFor more information visit https://access.redhat.com/errata/RHSA-2026:82415
Vendor fix Red Hat Product Security RHSA-2026:82371 · 3 productsFor more information visit https://access.redhat.com/errata/RHSA-2026:82371
Vendor fix Red Hat Product Security RHSA-2026:82368 · 2 productsFor more information visit https://access.redhat.com/errata/RHSA-2026:82368
Vendor fix Red Hat Product Security RHSA-2026:82061 · 1 productFor more information visit https://access.redhat.com/errata/RHSA-2026:82061
Vendor fix Red Hat Product Security RHSA-2026:82059 · 1 productFor more information visit https://access.redhat.com/errata/RHSA-2026:82059
Workaround from the vendor Red Hat Product Security RHSA-2026:82415 · 1 productMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Advisories and patches

github.comPatch
github.comRelease Notes
github.comMitigation · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionpoc2026-09-29
OpenCVESSVC decisionpoc—
CNACVSS 3.15.9read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-755read 2026-10-23
FIRST EPSSEPSS score0.4 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-09-28
Last Modified: 2026-10-06
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-102274?

Is CVE-2026-102274 actively exploited?

A proof-of-concept exploit exists for CVE-2026-102274, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-102274?

CVE-2026-102274 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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