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CVE-2026-108725— Cheshire Cat AI core through 2.0.23 Stored XSS via uploads plugin

Quick assessment

Affected
cheshire-cat-ai core
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 核心版本 2.0.23 及之前版本存在一个存储型跨站脚本（Stored Cross-Site Scripting, XSS）漏洞，该漏洞位于插件“uploads”中。由于该插件在处理 POST /uploads 请求时未对上传文件类型进行任何限制，攻击者可以上传 HTML 文件。随后，攻击者可将公开的 GET /uploads/{path} 链接发送给已登录的受害者（包括管理员），从而在应用上下文中以受害者的访问令牌（access_token）Cookie 执行恶意脚本。

CVSS 5.4 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
cheshire-cat-ai core ≤ 2.0.23 affected
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I. Basic Information for CVE-2026-108725

Vulnerability Information
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Vulnerability Title
Cheshire Cat AI core through 2.0.23 Stored XSS via uploads plugin
Source: CVE Program / CVE List V5
Vulnerability Description
Cheshire Cat AI core through 2.0.23 contains a stored cross-site scripting vulnerability in the uploads plugin that allows authenticated users to upload HTML files via POST /uploads without type restrictions. Attackers can send the public GET /uploads/{path} URL to a signed-in victim, executing script in the application origin with the victim's access_token cookie, including administrators.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cheshire-cat-ai core 0 ~ 2.0.23 -

II. Public POCs for CVE-2026-108725

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-108725

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Patches & Fixes for CVE-2026-108725 (1)

Vendor Advisories for CVE-2026-108725 (1)

Proof of Concept for CVE-2026-108725 (1)

News Coverage for CVE-2026-108725 (1)

IV. Related Vulnerabilities

Same product: core
Same vendor: cheshire-cat-ai
Same weakness: CWE-79

V. Comments for CVE-2026-108725

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