CVE-2026-20841

CVE-2026-20841 - Windows 记事本远程代码执行漏洞 针对 Windows 记事本 Markdown 渲染器中远程代码执行漏洞的概念验证（PoC）。该 Markdown 引擎未限制 URL 协议，允许通过可点击链接触发任意协议处理器。 免责声明 1. 并非本人发现。 功劳归于 MSRC 公告 上的原始研究人员。此为 PoC 复现。 2. 实际严重性低于听起来的效果。 在大多数情况下需要多次点击（参见 局限性）。构建此工具是因为“记事本远程代码执行”这个梗太有趣了，不容错过。 攻击向量 1. 远程载荷（file:///） click file:/// 协议可解析远程...

CVE-2026-20841

CVE-2026-20841 - Windows 记事本远程代码执行 针对 Windows 记事本 Markdown 渲染器中远程代码执行漏洞的 PoC。该 Markdown 引擎未限制 URL 协议，允许通过可点击链接触发任意协议处理器。 免责声明 1. 并非我的发现。 功劳归于 MSRC 公告 上的原始研究人员。此为 PoC 复现。 2. 严重性比听起来要低。 在大多数情况下需要多次点击（参见 局限性）。 PoC 本地二进制执行（file://） click 启动磁盘上已有的任何可执行文件 — cmd.exe、powershell.exe、mshta.exe 等。 步骤 1. 步骤 ...

CVE-2026-92214

CVE-2026-92214 affects a2ui-project a2ui versions up to 0.10.7 , specifically the file sanitizer-markdown-renderer-service.ts within the a2a-chat-canvas Angular component. The vulnerability is a Cross-Site Scripting (XSS) flaw in an unknown function of that service. A remote attacker with low pri...

CVE-2026-92214 a2ui-project a2ui a2a-chat-canvas sanitizer-markdown-renderer-service.ts cross site scripting

A flaw has been found in a2ui-project a2ui up to 0.10.7. Affected is an unknown function of the file samples/community/client/angular/projects/a2a-chat-canvas/src/lib/services/sanitizer-markdown-renderer-service.ts of the component a2a-chat-canvas. Executing a manipulation can lead to cross site...

EUVD-2026-80072

A flaw has been found in a2ui-project a2ui up to 0.10.7. Affected is an unknown function of the file samples/community/client/angular/projects/a2a-chat-canvas/src/lib/services/sanitizer-markdown-renderer-service.ts of the component a2a-chat-canvas. Executing a manipulation can lead to cross site...

CVE-2026-92214 a2ui-project a2ui a2a-chat-canvas sanitizer-markdown-renderer-service.ts cross site scripting

A flaw has been found in a2ui-project a2ui up to 0.10.7. Affected is an unknown function of the file samples/community/client/angular/projects/a2a-chat-canvas/src/lib/services/sanitizer-markdown-renderer-service.ts of the component a2a-chat-canvas. Executing a manipulation can lead to cross site...

PT-2026-93250

Name of the Vulnerable Software and Affected Versions a2ui-project a2ui versions prior to 0.10.8 Description A flaw in the a2a-chat-canvas component allows a remote attacker to perform cross-site scripting XSS, a technique where malicious scripts are injected into trusted websites. The issue...

CVE-2026-92214: Improper Neutralization of Input During Web Page Generation

A flaw has been found in a2ui-project a2ui up to 0.10.7. Affected is an unknown function of the file samples/community/client/angular/projects/a2a-chat-canvas/src/lib/services/sanitizer-markdown-renderer-service.ts of the component a2a-chat-canvas. Executing a manipulation can lead to cross site...

CVE-2026-77088: Improper Neutralization of Input During Web Page Generation

justhtml versions 0.9.0 through 1.21.0 contain a cross-site scripting vulnerability in tomarkdown where inline code spans fail to account for blank lines as block boundaries. Attackers can inject blank lines into code or pre element text to break the inline span, causing sanitized HTML to be...

GHSA-34PM-923J-7WF8 Kestra vulnerable to stored XSS via custom Markdown [[link]] attribute injection

Summary Kestra’s Markdown renderer supports a custom link ... syntax that is converted into a custom HTML element. The custom Markdown parser allows attacker-controlled attributes to be rendered into the generated element without proper allowlisting or sanitization. As a result, a user who can...

Kestra vulnerable to stored XSS via custom Markdown [[link]] attribute injection

Summary Kestra’s Markdown renderer supports a custom link ... syntax that is converted into a custom HTML element. The custom Markdown parser allows attacker-controlled attributes to be rendered into the generated element without proper allowlisting or sanitization. As a result, a user who can...

CVE-2026-19744

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

CVE-2026-19744 Stored Cross-site Scripting in Pentestify Markdown renderer via unescaped quotes

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

EUVD-2026-58109

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

CVE-2026-19744

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

CVE-2026-19744 Stored Cross-site Scripting in Pentestify Markdown renderer via unescaped quotes

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

CVE-2026-19744 Stored Cross-site Scripting in Pentestify Markdown renderer via unescaped quotes

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

CVE-2026-19744

CVE-2026-19744 details a stored Cross-site Scripting (XSS) vulnerability in the Markdown renderer of Pentestify (MaAlfer) prior to version 2.3.2. The issue arises when a Markdown link URL contains a double quote, which closes the anchor href and allows arbitrary JavaScript execution in the applic...

CVE-2026-19744: Improper Neutralization of Input During Web Page Generation

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...

PT-2026-71684

Cross-site Scripting in the Markdown renderer in maalfer Pentestify before 2.3.2 allows authenticated users to execute arbitrary JavaScript in the application origin via a Markdown link whose URL contains a double quote, which closes the anchor's href attribute because the renderer's sanitization...