---
id: CVE-2026-109318
title: >-
  Grav Git Sync 1.0.2 through 3.4.12 contains a command injection vulnerability
  that allows authenticated content editors to execute OS commands by injecting
  shell substitutions into profile fields
summary: >-
  Grav Git Sync 1.0.2 through 3.4.12 contains a command injection vulnerability
  that allows authenticated content editors to execute OS commands by injecting
  shell substitutions into profile fields. When the gravuser or gravfull author
  mod…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:26.807'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109318'
references:
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-c89w-55m3-fmf7'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/grav-git-sync-1.0.2-through-3.4.12-command-injection-via-commit-author
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.200Z'
---

## Overview

Grav Git Sync 1.0.2 through 3.4.12 contains a command injection vulnerability that allows authenticated content editors to execute OS commands by injecting shell substitutions into profile fields. When the gravuser or gravfull author mode is enabled, attackers can set a malicious username, full name, or email that reaches PHP exec() via git commit --author, running commands as the web-server account.

## Remediation

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