CVE-2026-102267: PyJWT is a Python implementation of JSON Web Token standards

Q: How do I fix CVE-2026-102267?

pyjwt: upgrade to 2.14.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-102267 being exploited?

CVE-2026-102267 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-102267 affect?

CVE-2026-102267 affects pyjwt. Severity is high (CVSS 7.4). 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 endpo

Q: How urgent is CVE-2026-102267?

Priority 32/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.4REMOTEUPGRADE

CVE-2026-102267 is a high-severity flaw (CVSS 7.4) affecting pyjwt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 verificat

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-200, CWE-345, CWE-918
Published	2026-09-28
Last modified	2026-10-07

Publisher (CNA): GitHub, Inc. · Vendor: pyjwt project

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-28 21:17 UTCPublished CVE record published
2026-10-07 20:27 UTCUpdated Record last modified

pyjwt project pyjwt UPGRADE

Affected: < 2.14.0

Fixed in: 2.14.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pyjwt || rpm -q pyjwt || pyjwt --version

2. UPGRADE to 2.14.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pyjwt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pyjwt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Advisories and coverage

Official advisories

Amazon Linux 2023 ALAS: ALAS2023-2026-3298 (important): python-jwt 2026-10-24

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-102267?

pyjwt: upgrade to 2.14.0. Exact commands for each OS are on this page.

Is CVE-2026-102267 being exploited?

CVE-2026-102267 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-102267 affect?

CVE-2026-102267 affects pyjwt. Severity is high (CVSS 7.4). 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 endpo

How urgent is CVE-2026-102267?

Priority 32/100. High severity; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

Related CVEs

CVE-2026-48526 HIGH 7.4 UPGRADE PyJWT is a JSON Web Token implementation in Python
CVE-2026-48524 LOW 3.7 UPGRADE PyJWT is a JSON Web Token implementation in Python
CVE-2026-48522 MEDIUM 4.2 UPGRADE PyJWT is a JSON Web Token implementation in Python
CVE-2026-48525 MEDIUM 5.3 UPGRADE PyJWT is a JSON Web Token implementation in Python
CVE-2026-48523 MEDIUM 5.4 UPGRADE PyJWT is a JSON Web Token implementation in Python

References

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