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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.

在 cheshire-cat-ai（Cheshire Cat AI）版本 1.9.2 及更早版本中发现了一个漏洞。该漏洞位于文件 中的 函数。由于对参数 的操作处理不当，导致认证机制缺失。攻击者可远程发起攻击。该漏洞利用方式已公开披露，并可能被实际利用。项目组已通过问题报告较早获知此问题，但截至目前尚未作出回应。

CVSS 7.3 · High

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

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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