---
id: CVE-2026-90579
title: A vulnerability has been found in cheshire-cat-ai Cheshire Cat AI up to 1.9.2
summary: >-
  A vulnerability has been found in cheshire-cat-ai Cheshire Cat AI up to 1.9.2.
  This affects the function _authorize_http_key of the file
  core/cat/factory/custom_auth_handler.py. The manipulation of the argument
  user_id leads to missing a…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-287
  - CWE-306
vendor: cheshire-cat-ai
product: Cheshire Cat AI
affected:
  - cheshire_cat_ai 1.9.0
  - cheshire_cat_ai 1.9.1
  - cheshire_cat_ai 1.9.2
published: '2026-09-13'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:56:48.220'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90579'
references:
  - url: 'https://github.com/cheshire-cat-ai/core/issues/1137'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90579'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/913219'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403164'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403164/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-14T17:05:52.874522Z'
ingestedAt: '2026-09-14T15:23:07.469Z'
epss: 0.00391
epssPercentile: 0.33123
---

## Overview

A vulnerability has been found in cheshire-cat-ai Cheshire Cat AI up to 1.9.2. This affects the function _authorize_http_key of the file core/cat/factory/custom_auth_handler.py. The manipulation of the argument user_id leads to missing authentication. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.