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CVE-2026-58256— GRR vulnerable to Remote Code Execution Via PHP Code Injection

Quick assessment

Affected
JeromeDevome GRR
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GRR 是一款资源管理与预订应用。在官方公告中修复该问题的版本 4.5.0 之前，管理员可通过 LDAP 连接器配置参数（例如 ）注入恶意 PHP 代码，从而污染 文件，导致远程代码执行漏洞。攻击流程要求管理员首先成功连接至 LDAP 服务器（该服务器可由攻击者控制），随后在连接器设置页面提交恶意输入。官方公告指出，该问题已在 4.5.0 版本中修复。

CVSS 9.1 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-58256

Vulnerability Information
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Vulnerability Title
GRR vulnerable to Remote Code Execution Via PHP Code Injection
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
JeromeDevome GRR < 4.5.0 -

II. Public POCs for CVE-2026-58256

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III. Intelligence Information for CVE-2026-58256

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Other References for CVE-2026-58256 (3)

Same Patch Batch · JeromeDevome · 2026-10-27 · 3 CVEs total

CVE-2026-58205 8.1 HIGH GRR has a Reflected XSS issue
CVE-2026-58257 7.2 HIGH GRR vulnerable to Arbitrary File Read and Deletion

IV. Related Vulnerabilities

Same product: GRR
Same vendor: JeromeDevome
Same weakness: CWE-94