CVE-2026-58256 GRR vulnerable to Remote Code Execution Via PHP Code Injection
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-58256?
CVE-2026-58256 is a critical vulnerability in JeromeDevome GRR, published on 27 Oct 2026.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-58256?
How do I fix CVE-2026-58256?
No fix has been published for CVE-2026-58256 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-58256 being exploited?
There is no known exploitation of CVE-2026-58256 in the wild and no public exploit code.
Sources
Also known as GHSA-fp4f-xmw6-5jf8.