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CVE-2026-44401— Typemill CMS 2.x Persistent XSS via Markdown javascript URI

Quick assessment

Affected
Typemill Typemill
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.

Typemill是Typemill个人开发者开源的一款基于文件的轻量级内容管理系统。 Typemill 2.0.0版本至2.23.0版本存在跨站脚本漏洞，该漏洞源于Markdown解析器扩展中对href值清理不当，可能导致经过身份验证的用户通过主题配置访问注入恶意JavaScript URI，造成会话Cookie窃取、认证请求伪造和凭据收集。

CVSS 4.8 · Medium EPSS 0.32% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
Typemill Typemill 2.0.0≤ 2.23.0 affected
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I. Basic Information for CVE-2026-44401

Vulnerability Information
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Vulnerability Title
Typemill CMS 2.x Persistent XSS via Markdown javascript URI
Source: CVE Program / CVE List V5
Vulnerability Description
Typemill CMS version 2.x contains a persistent cross-site scripting vulnerability in the Markdown parser extension that allows authenticated users with theme-configuration access to inject malicious JavaScript URIs by supplying unsanitized href values in Markdown links. Attackers can craft Markdown links using the javascript: scheme through ParsedownExtension.php or TwigMarkdownExtension.php, storing a persistent payload that executes in the browser of every visitor who clicks the link, enabling session cookie theft, authenticated request forgery, and credential harvesting.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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
Vulnerability Title
Typemill 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Typemill是Typemill个人开发者开源的一款基于文件的轻量级内容管理系统。 Typemill 2.0.0版本至2.23.0版本存在跨站脚本漏洞，该漏洞源于Markdown解析器扩展中对href值清理不当，可能导致经过身份验证的用户通过主题配置访问注入恶意JavaScript URI，造成会话Cookie窃取、认证请求伪造和凭据收集。
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
Typemill Typemill 2.0.0 ~ 2.23.0 -

II. Public POCs for CVE-2026-44401

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III. Intelligence Information for CVE-2026-44401

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Patches & Fixes for CVE-2026-44401 (1)

Vendor Advisories for CVE-2026-44401 (1)

Proof of Concept for CVE-2026-44401 (1)

Vendor Pages for CVE-2026-44401 (1)

Other References for CVE-2026-44401 (1)

IV. Related Vulnerabilities

Same product: Typemill
Same vendor: Typemill
Same weakness: CWE-79