---
id: CVE-2024-33663
aliases:
  - GHSA-6c5p-j8vq-pqhj
  - CVE-2026-85394
  - PYSEC-2024-232
title: python-jose algorithm confusion with OpenSSH ECDSA keys
summary: python-jose algorithm confusion with OpenSSH ECDSA keys
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
vendor: python-jose
product: python-jose
ecosystem: pip
affected:
  - python-jose < 3.4.0
patched:
  - python-jose 3.4.0
published: '2024-04-26'
updated: '2026-09-04'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-6c5p-j8vq-pqhj'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-33663'
  - url: 'https://github.com/mpdavis/python-jose/issues/346'
  - url: 'https://github.com/mpdavis/python-jose'
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/python-jose/PYSEC-2024-232.yaml
  - url: >-
      https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-python-jose-cve-2024-33663
tags:
  - osv
  - pip
epss: 0.00307
epssPercentile: 0.23736
ingestedAt: '2026-09-04T19:32:57.482Z'
---

## Overview

python-jose through 3.3.0 has algorithm confusion with OpenSSH ECDSA keys and other key formats. This is similar to CVE-2022-29217.

## Affected packages

- `python-jose < 3.4.0`

## Remediation

Upgrade to a patched release:

- `python-jose 3.4.0`