JeromeDevome GRR up to 4.4.x LDAP Connector config_ldap.inc.php ldap_filter code injection

Summaryinfo

A vulnerability, which was classified as problematic, has been found in JeromeDevome GRR up to 4.4.x. This affects an unknown function of the file /personnalisation/config_ldap.inc.php of the component LDAP Connector. The manipulation of the argument ldap_filter leads to code injection. This vulnerability is traded as CVE-2026-58256. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in JeromeDevome GRR up to 4.4.x. It has been rated as problematic. This issue affects an unknown functionality of the file /personnalisation/config_ldap.inc.php of the component LDAP Connector. The manipulation of the argument ldap_filter with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-58256 since 06/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

By approaching the search of inurl:personnalisation/config_ldap.inc.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.5.0 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• JeromeDevome

Name

• GRR

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4

Website

• Product: https://github.com/JeromeDevome/GRR/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion