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CVE-2026-90579— cheshire-cat-ai Cheshire Cat AI custom_auth_handler.py _authorize_http_key missing authentication

Quick assessment

Affected
cheshire-cat-ai Cheshire Cat AI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cheshire Cat AI是Cheshire Cat AI组织的一个开发人工智能助手的核心框架。 Cheshire Cat AI 1.9.2及之前版本存在授权问题漏洞，该漏洞源于对文件core/cat/factory/custom_auth_handler.py中函数_authorize_http_key的参数user_id操作不当，导致身份验证缺失，可能被远程攻击者利用。

CVSS 7.3 · High EPSS 0.65% · P50

Affected Version Matrix 3

VendorProduct Version RangeStatus
cheshire-cat-ai Cheshire Cat AI 1.9.0 affected
1.9.1 affected
1.9.2 affected
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I. Basic Information for CVE-2026-90579

Vulnerability Information
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Vulnerability Title
cheshire-cat-ai Cheshire Cat AI custom_auth_handler.py _authorize_http_key missing authentication
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Cheshire Cat AI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cheshire Cat AI是Cheshire Cat AI组织的一个开发人工智能助手的核心框架。 Cheshire Cat AI 1.9.2及之前版本存在授权问题漏洞，该漏洞源于对文件core/cat/factory/custom_auth_handler.py中函数_authorize_http_key的参数user_id操作不当，导致身份验证缺失，可能被远程攻击者利用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cheshire-cat-ai Cheshire Cat AI 1.9.0 cpe:2.3:a:cheshire-cat-ai:cheshire_cat_ai:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90579

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III. Intelligence Information for CVE-2026-90579

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Proof of Concept for CVE-2026-90579 (1)

IV. Related Vulnerabilities

Same vendor: cheshire-cat-ai
Same weakness: CWE-306

V. Comments for CVE-2026-90579

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