CVE-2026-58256 GRR - Remote Code Execution

GRR < 4.5.0 contains a remote code execution caused by malicious PHP injection via LDAP connector configuration parameters, letting administrators execute arbitrary code remotely, exploit requires successful LDAP connection and admin access.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
27 October 2026
Updated
29 October 2026
Weakness
CWE-94

Vendor fix

Upgrade to version 4.5.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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