EUVD-2026-69031
GHSA-jjvr-265m-qmq9
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Admin-level privilege required (PR:H); scope changes (S:C) because exec() executes OS commands outside the LibreNMS application boundary on the underlying host.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
LibreNMS versions >= 23.10.0 and < 26.2.0 (fixed in 26.4.0) contain an authenticated OS command injection vulnerability in libvirt discovery. When libvirt support is enabled (enable_libvirt=true), the device hostname ($this->getDevice()->hostname) is concatenated into shell commands (ssh, virsh list/dumpxml/domstate) in VminfoLibvirt.php and passed to exec() without escapeshellarg() or argument separation. An authenticated admin can set a crafted device hostname to inject arbitrary OS commands, leading to remote code execution in the discovery worker context.
AnalysisAI
OS command injection in LibreNMS's libvirt discovery module (VminfoLibvirt.php) enables any authenticated administrator to execute arbitrary OS commands on the discovery worker host by setting a crafted device hostname. Affected deployments span LibreNMS 23.10.0 through 26.3.x wherever the enable_libvirt option is explicitly set to true; the vendor-released fix is version 26.4.0. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Three conditions must be simultaneously true for exploitation: (1) the attacker holds a valid LibreNMS administrator account - lower-privileged LibreNMS user roles cannot modify device hostnames in a way that reaches the vulnerable code path; (2) the libvirt discovery feature is explicitly enabled, meaning enable_libvirt=true has been set in the LibreNMS configuration, which is a non-default state requiring deliberate operator action; and (3) the LibreNMS discovery worker executes a discovery cycle against the crafted device, either via the scheduled poller or a manually triggered discovery run. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N) reflects a network-accessible attack requiring administrator-level privileges with no additional complexity - the high privilege requirement is the primary mitigating factor against opportunistic exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade LibreNMS to version 26.4.0 or later, which resolves the injection by applying proper shell argument escaping in VminfoLibvirt.php; the advisory at https://github.com/librenms/librenms/security/advisories/GHSA-wff2-9gjr-95f3 documents the fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, document all active administrator accounts and verify their authorization levels; consider disabling the enable_libvirt configuration option if that discovery capability is not operationally critical, providing immediate risk reduction. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it
sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not
(1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and (5) boardDataWW.php in Netgear
The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible by
ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Rated critical severity (C
Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows au
Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP c
Palo Alto Networks PAN-OS management web interface contains an authentication bypass allowing unauthenticated attackers
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows
The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1
Same weakness CWE-78 – OS Command Injection
View allShare
External POC / Exploit Code
Leaving vuln.today