---
id: CVE-2026-58256
title: GRR vulnerable to Remote Code Execution Via PHP Code Injection
summary: >-
  GRR is a resource management and reservation application. Prior to the
  advisory-reported fixed version 4.5.0, an administrator can inject malicious
  PHP through LDAP connector configuration parameters such as `ldap_filter`,
  poisoning `/pe…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-94
vendor: JeromeDevome
product: GRR
affected:
  - GRR < 4.5.0
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T22:32:12.589Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-58256'
references:
  - url: >-
      https://github.com/JeromeDevome/GRR/security/advisories/GHSA-fp4f-xmw6-5jf8
    label: >-
      https://github.com/JeromeDevome/GRR/security/advisories/GHSA-fp4f-xmw6-5jf8
  - url: >-
      https://github.com/JeromeDevome/GRR/commit/3ff9504ae557da1e8e208149acbf8c7f04de645f
    label: >-
      https://github.com/JeromeDevome/GRR/commit/3ff9504ae557da1e8e208149acbf8c7f04de645f
  - url: 'https://github.com/JeromeDevome/GRR/tree/v4.5.0'
    label: 'https://github.com/JeromeDevome/GRR/tree/v4.5.0'
tags:
  - cve.org
ingestedAt: '2026-10-27T22:58:58.458Z'
---

## Overview

GRR is a resource management and reservation application. Prior to the advisory-reported fixed version 4.5.0, an administrator can inject malicious PHP through LDAP connector configuration parameters such as `ldap_filter`, poisoning `/personnalisation/config_ldap.inc.php` and permitting remote code execution. The administrator must first successfully connect to an LDAP server, which can be attacker-controlled, and then submit malicious input on the subsequent connector settings page. The advisory reports this issue as fixed in version 4.5.0.

## Affected

- `GRR < 4.5.0`

## Remediation

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