---
title: "PyJWT — CVE-2026-102266"
description: "A cryptographic weakness flaw affects the PyPI package PyJWT. Affected versions: >= 2.13.0, < 2.14.0. Fixed from version 2.14.0. CVSS score 7.4."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-29-cve-2026-102266
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-29
dateModified: 2026-09-29
---
# PyJWT — CVE-2026-102266

A cryptographic weakness flaw affects the PyPI package PyJWT. Affected versions: >= 2.13.0, < 2.14.0. Fixed from version 2.14.0. CVSS score 7.4.

## What to do

Update PyJWT to 2.14.0 or later.

| Fact | Value |
| --- | --- |
| Package | PyJWT |
| Ecosystem | PyPI (Python) |
| Class | Cryptographic weakness |
| Affected versions | >= 2.13.0, < 2.14.0 |
| Fixed version | 2.14.0 |
| CVSS | 7.4 |
| CVE | CVE-2026-102266 |
| GHSA | GHSA-9j54-fg26-wv3r |
| Published on | September 29, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-9j54-fg26-wv3r](https://github.com/advisories/GHSA-9j54-fg26-wv3r) — GitHub Security Advisories
- [NVD — CVE-2026-102266](https://nvd.nist.gov/vuln/detail/CVE-2026-102266) — NVD

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