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High · 8.6 Public exploit CVE-2025-66301 EUVD-2025-200109GHSA-v8x2-fjv7-8hjh

Grav ihas Broken Access Control which allows an Editor to modify the page's YAML Frontmatter to alter form processing actions

Published Dec 1, 2025 · Updated Dec 2, 2025 · Assigned by GitHub_M

Vendor: getgrav Product: grav Package: getgrav/grav Ecosystem: Packagist

Description

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, due to improper authorization checks when modifying critical fields on a POST request to /admin/pages/{page_name}, an editor with only permissions to change basic content on the form is now able to change the functioning of the form through modifying the content of the data[_json][header][form] which is the YAML frontmatter which includes the process section which dictates what happens after a user submits the form which include some important actions that could lead to further vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.

Affected products

VendorProductAffectedFixed
getgrav grav < 1.8.0-beta.27 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist getgrav/grav < 1.8.0-beta.27 1.8.0-beta.27 GHSA-v8x2-fjv7-8hjh

References