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TI-2026-81576 Aliases CVE-2026-58256

PHP code injection in GRR allows remote code execution

Priority MEDIUM 42CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

JeromeDevome GRR before 4.5.0 is a resource management and reservation application. A flaw in code generation (CWE-94) lets an administrator inject malicious PHP through LDAP connector settings such as ldap_filter, and the injected code is written into a PHP configuration file. An administrator with high privileges can execute code remotely on the server, and the LDAP server the administrator connects to can be attacker-controlled.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00575 47th percentileScored 2026-11-07
Fix Fixed GRR (JeromeDevome): 4.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JeromeDevomeGRRbefore 4.5.04.5.0Patch availableCNA
  • GRR VendorJeromeDevome Affected before 4.5.0 Fixed in 4.5.0 Patch available CNA

Remediation

Update GRR to version 4.5.0, the fixed version named in the advisory.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA GRR (JeromeDevome) Fixed in 4.5.0

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-58256
  2. 2026-11-03 CISA SSVC decision points changed

References

Other 3

  • TI-2026-81574 Reflected cross-site scripting in JeromeDevome GRR CVSS 3.1HIGH 8.1
  • TI-2026-81577 Arbitrary file read and deletion in GRR via database restoration CVSS 3.1HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences