---
id: CVE-2026-64850
title: Grav is a file-based Web platform
summary: >-
  Grav is a file-based Web platform. Prior to 2.0.7, Grav
  Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an
  editor-controlled Class::method provider and arguments to
  call_user_func_array() without rejecting dan…
severity: high
cwe:
  - CWE-94
vendor: getgrav
product: getgrav/grav
affected:
  - getgrav/grav < 2.0.7
patched:
  - getgrav/grav 2.0.7
published: '2026-08-19'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:13:25.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64850'
references:
  - url: >-
      https://github.com/getgrav/grav/commit/acffa34cbb0787fee87c609e0d6289e904fee33c
    label: security-advisories@github.com
  - url: 'https://github.com/getgrav/grav/releases/tag/2.0.7'
    label: security-advisories@github.com
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5'
    label: security-advisories@github.com
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-fj2p-qj2f-74v5'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64850'
  - url: 'https://github.com/advisories/GHSA-fj2p-qj2f-74v5'
tags:
  - nvd
  - ghsa
  - composer
epss: 0.00467
epssPercentile: 0.37847
aliases:
  - GHSA-fj2p-qj2f-74v5
ecosystem: composer
ingestedAt: '2026-09-02T15:46:30.093Z'
---

## Overview

Grav is a file-based Web platform. Prior to 2.0.7, Grav Blueprint::dynamicData() in system/src/Grav/Common/Data/Blueprint.php sends an editor-controlled Class::method provider and arguments to call_user_func_array() without rejecting dangerous callback parameters. An account with admin.pages or api.pages.write can use Grav\Common\Utils::arrayFilterRecursive() as a trampoline with system as the callback, place a command in page frontmatter, and execute that command as the web server user when the page is viewed. This issue is fixed in version 2.0.7.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-64850)

Affected packages:

- `getgrav/grav < 2.0.7`

Patched in:

- `getgrav/grav 2.0.7`

Source: https://github.com/advisories/GHSA-fj2p-qj2f-74v5