---
id: CVE-2026-100668
title: Grav 2.0.0 through 2.0.24 contain a Twig content sandbox escape
summary: >-
  Grav 2.0.0 through 2.0.24 contain a Twig content sandbox escape. The `array`
  filter (and its identical function form) is on the sandbox allowlist but is
  registered without the needs_is_sandboxed guard that print_r, vardump,
  json_encode, …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
vendor: getgrav
product: grav
affected:
  - grav < 2.0.25
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T14:16:50.383'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100668'
references:
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-59qm-58v5-gvc5'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/grav-before-2.0.25-sandbox-escape-via-array-filter
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T13:33:20.913Z'
---

## Overview

Grav 2.0.0 through 2.0.24 contain a Twig content sandbox escape. The `array` filter (and its identical function form) is on the sandbox allowlist but is registered without the needs_is_sandboxed guard that print_r, vardump, json_encode, yaml_encode and string carry, and its implementation calls toArray() — or falls back to an (array) cast — without consulting the sandbox method allowlist. Because the `grav` Twig global is the raw Pimple-based dependency injection container, a user who can author Twig in page content can evaluate `grav|array` to read the container's private $values array, including the un-redacted Config service; a second array cast returns the entire configuration tree, disclosing plugin credentials, SMTP and OAuth secrets, Redis passwords, proxy URLs and the security.* subtree that the sandbox's redaction is meant to hide. Because the payload is stored in page content, the disclosed configuration is rendered to anonymous visitors. Grav 1.7 is not affected as it has no Twig content sandbox. Fixed in Grav 2.0.25.

## Remediation

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