---
id: CVE-2026-78851
title: >-
  Directory Traversal vulnerability in Grav CMS 2.0.3 through 2.0.6 allows a
  remote attacker to obtain sensitive information via the GravExtension.php and
  the mediaDirFunc method.
summary: >-
  Directory Traversal vulnerability in Grav CMS 2.0.3 through 2.0.6 allows a
  remote attacker to obtain sensitive information via the GravExtension.php and
  the mediaDirFunc method.
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-22
  - CWE-200
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:17:43.850'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78851'
references:
  - url: 'https://github.com/SLO-CYBER-SEC/CVE-2026-78851'
    label: cve@mitre.org
  - url: 'https://github.com/getgrav/grav'
    label: cve@mitre.org
  - url: >-
      https://github.com/getgrav/grav/blob/2.0.6/system/config/security.yaml#L325
    label: cve@mitre.org
  - url: >-
      https://github.com/getgrav/grav/blob/2.0.6/system/src/Grav/Common/Twig/Extension/GravExtension.php#L1629
    label: cve@mitre.org
  - url: 'https://github.com/SLO-CYBER-SEC/CVE-2026-78851'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-15T18:46:12.816122Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/SLO-CYBER-SEC/CVE-2026-78851'
  checkedAt: '2026-10-15T19:26:21.076Z'
ingestedAt: '2026-10-15T17:18:20.102Z'
---

## Overview

Directory Traversal vulnerability in Grav CMS 2.0.3 through 2.0.6 allows a remote attacker to obtain sensitive information via the GravExtension.php and the mediaDirFunc method.

## Remediation

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