CVE-2021-23639

Overview md-to-pdf is a CLI tool for converting Markdown files to PDF. Affected versions of this package are vulnerable to Remote Code Execution RCE due to utilizing the library gray-matter to parse front matter content, without disabling the JS engine. Usage: python3 cve-2021-23639.py targerurl...

CVE-2026-78847

A flaw was found in gray-matter. The component uses the eval function to parse document metadata front matter specified as JavaScript. An attacker who supplies malicious input containing JavaScript front matter can exploit this behavior to achieve arbitrary code execution on the target system...

SUSE CVE-2026-78847

An issue in gray-matter All versions verified on 4.0.3 allows the JavaScript engine in lib/engines.js using eval to parse front matter when language is js/javascript.This allows arbitrary code execution...

EUVD-2026-84241

An issue in gray-matter All versions verified on 4.0.3 allows the JavaScript engine in lib/engines.js using eval to parse front matter when language is js/javascript.This allows arbitrary code execution...

CVE-2026-78847

An issue in gray-matter All versions verified on 4.0.3 allows the JavaScript engine in lib/engines.js using eval to parse front matter when language is js/javascript.This allows arbitrary code execution...

PT-2026-96304

Name of the Vulnerable Software and Affected Versions gray-matter affected versions not specified Description An issue in the JavaScript engine located in lib/engines.js uses the eval function to parse front matter when the language is set to js/javascript, which can lead to arbitrary code...

CVE-2026-78847

An issue in gray-matter All versions verified on 4.0.3 allows the JavaScript engine in lib/engines.js using eval to parse front matter when language is js/javascript.This allows arbitrary code execution...

CVE-2026-78847

All versions of gray-matter (verified on version 4.0.3 ) are vulnerable to arbitrary code execution. The flaw exists in the JavaScript engine located in lib/engines.js , where the application uses eval() to parse front matter when the language is set to js/javascript . While the documents do not ...

CVE-2026-78847: Improper Neutralization of Directives in Dynamically Evaluated Code

An issue in gray-matter All versions verified on 4.0.3 allows the JavaScript engine in lib/engines.js using eval to parse front matter when language is js/javascript.This allows arbitrary code execution...

CVE-2026-78847

An issue in gray-matter All versions verified on 4.0.3 allows the JavaScript engine in lib/engines.js using eval to parse front matter when language is js/javascript.This allows arbitrary code execution...

CVE-2026-74234

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CVE-2026-74234

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CVE-2026-74234

Legora before 2026-08-14 contains a cross-site scripting (XSS) vulnerability. The root cause is that a Mermaid block prefixed with a gray-matter JavaScript front-matter directive causes the front-matter parser to invoke eval() before any SVG sanitization occurs, enabling arbitrary JavaScript exec...

Code Injection

@prompty/core is vulnerable to Code Injection. The vulnerability is due to the use of gray-matter with executable JavaScript frontmatter enabled, which allows an attacker to execute arbitrary JavaScript by supplying a malicious .prompty file...

Prompty: Arbitrary code execution via JavaScript frontmatter in TypeScript loader

Summary The TypeScript Prompty loader used gray-matter without overriding executable frontmatter engines. gray-matter supports JavaScript frontmatter blocks such as ---js and evaluates them while parsing. An attacker-controlled .prompty file could therefore execute arbitrary JavaScript during...

GHSA-C4GH-RV8H-Q9VW Prompty: Arbitrary code execution via JavaScript frontmatter in TypeScript loader

Summary The TypeScript Prompty loader used gray-matter without overriding executable frontmatter engines. gray-matter supports JavaScript frontmatter blocks such as ---js and evaluates them while parsing. An attacker-controlled .prompty file could therefore execute arbitrary JavaScript during...

CVE-2026-53597: Improper Control of Generation of Code

Prompty is a markdown file format .prompty for LLM prompts. From 2.0.0-alpha.1 until 2.0.0-beta.3, the @prompty/core TypeScript loader in runtime/typescript/packages/core/src/core/loader.ts used gray-matter without overriding executable js and javascript frontmatter engines, allowing an...

Remote Code Execution (RCE)

tinacms is vulnerable to remote code execution. The vulnerability is due to improper handling of markdown content using the gray-matter package, which allows an attacker to execute arbitrary code by injecting malicious content into processed markdown files such as blog posts...

Arbitrary Code Injection

md-to-pdf is vulnerable to Arbitrary Code Injection. The vulnerability is due to a Markdown front-matter block that contains JavaScript delimiter, where the JS engine in gray-matter library executes arbitrary code in the Markdown to PDF converter process of md-to-pdf library, and attackers can...

CVE-2025-68278

Tina is a headless content management system. In tinacms prior to version 3.1.1, tinacms uses the gray-matter package in an insecure way allowing attackers that can control the content of the processed markdown files, e.g., blog posts, to execute arbitrary code. tinacms version 3.1.1, @tinacms/cl...