CVE-2025-66297 Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute...

CVE-2025-66297 Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute...

CVE-2025-66297 Grav vulnerable to Privilege Escalation and Authenticated Remote Code Execution via Twig Injection

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, the user can escalate their privileges to admin or execute...

PT-2025-48570

This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to 1.11.0-beta.1, a Stored Cross-Site Scripting XSS vulnerability was identified in the /admin/pages/page endpoint of the Grav application. This...

PT-2025-48560

Name of the Vulnerable Software and Affected Versions Grav versions prior to 1.8.0-beta.27 Description Grav is a file-based Web platform. Improper authorization checks when modifying critical fields on a POST request to the /admin/pages/page name endpoint allow an editor with limited permissions ...

PT-2025-48556

Name of the Vulnerable Software and Affected Versions Grav versions prior to 1.8.0-beta.27 Description A user with admin panel access and permissions to create or edit pages in Grav CMS can enable Twig processing in the page frontmatter. By injecting malicious Twig expressions, a user can escalat...

Grav CMS Twig SSTI Authenticated Sandbox Bypass RCE

This module exploits a Server-Side Template Injection SSTI vulnerability CVE-2025-66294 in Grav CMS that allows bypassing the Twig sandbox to achieve remote code execution. The cleanDangerousTwig method uses weak regex that fails to sanitize nested Twig calls within the evaluatetwig function. To...

Input validation

Grav is a content management system CMS. Prior to version 1.7.43, users who may write a page may use the frontmatter feature due to insufficient permission validation and inadequate file name validation. This may lead to remote code execution. Version 1.7.43 fixes this issue...

CVE-2024-27923 Remote Code Execution by uploading a phar file using frontmatter

Grav is a content management system CMS. Prior to version 1.7.43, users who may write a page may use the frontmatter feature due to insufficient permission validation and inadequate file name validation. This may lead to remote code execution. Version 1.7.43 fixes this issue...

CVE-2024-27923 Remote Code Execution by uploading a phar file using frontmatter

Grav is a content management system CMS. Prior to version 1.7.43, users who may write a page may use the frontmatter feature due to insufficient permission validation and inadequate file name validation. This may lead to remote code execution. Version 1.7.43 fixes this issue...

GHSA-F6G2-H7QV-3M5V Remote Code Execution by uploading a phar file using frontmatter

Summary - Due to insufficient permission verification, user who can write a page use frontmatter feature. - Inadequate File Name Validation Details 1. Insufficient Permission Verification In Grav CMS, "Frontmatter" refers to the metadata block located at the top of a Markdown file. Frontmatter...

Remote Code Execution by uploading a phar file using frontmatter

Summary - Due to insufficient permission verification, user who can write a page use frontmatter feature. - Inadequate File Name Validation Details 1. Insufficient Permission Verification In Grav CMS, "Frontmatter" refers to the metadata block located at the top of a Markdown file. Frontmatter...

PT-2024-22140 · Grav · Grav

Name of the Vulnerable Software and Affected Versions: Grav versions prior to 1.7.43 Description: The issue arises due to insufficient permission validation and inadequate file name validation, allowing users who can write a page to use the frontmatter feature. This can lead to remote code...

Arbitrary Code Injection

gatsby-plugin-mdx is vulnerable to arbitrary code injection. The vulnerability exists because the gatsby-plugin-mdx allows JS engine for frontmatter by default due to untrusted inputs which allows an attacker to inject arbitrary codes...

GHSA-MJ46-R4GR-5X83 Unsanitized JavaScript code injection possible in gatsby-plugin-mdx

Impact The gatsby-plugin-mdx plugin prior to versions 3.15.2 and 2.14.1 passes input through to the gray-matter npm package, which is vulnerable to JavaScript injection in its default configuration, unless input is sanitized. The vulnerability is present when passing input in both webpack MDX fil...

Unsanitized JavaScript code injection possible in gatsby-plugin-mdx

Impact The gatsby-plugin-mdx plugin prior to versions 3.15.2 and 2.14.1 passes input through to the gray-matter npm package, which is vulnerable to JavaScript injection in its default configuration, unless input is sanitized. The vulnerability is present when passing input in both webpack MDX fil...