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:///） root@kitploit: click...

CVE-2026-20841

CVE-2026-20841 - RCE en el Bloc de Notas de Windows PoC de una falla de ejecución remota de código en el renderizador de markdown del Bloc de Notas de Windows. El motor de markdown no restringe los protocolos de URL, lo que permite activar manejadores de protocolo arbitrarios mediante enlaces en...

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...

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...

CVE-2026-48910

A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors on the markdown renderer, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim. This issue affects Apache JSPWik...

EUVD-2026-51183

A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors on the markdown renderer, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim. This issue affects Apache JSPWik...

EUVD-2026-35496

md-fileserver allows for local viewing of markdown files in a browser. Prior to version 1.10.3, a cross-site scripting XSS vulnerability exists in the application’s Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML—including tags—is processed and injecte...

CVE-2026-44264

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

SUSE CVE-2026-44264

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

GHSA-3V85-FQVH-7RXF Ech0's RSS feed renders unescaped tag names and raw-HTML markdown, stored XSS against subscribers

Summary The public RSS/Atom feed at /rss renders two attacker-controlled surfaces without HTML escaping. Tag names flow through fmt.AppendfrenderedContent, "%s", tag.Name at internal/service/common/common.go:120, and the Markdown renderer at internal/util/md/md.go does not set the html.SkipHTML...

CVE-2026-44264

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

PYSEC-2026-2319

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1...

Weblate vulnerable to XSS via crafted Markdown

Impact The Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. Patches https://github.com/WeblateOrg/weblate/pull/19259 Workarounds Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should...