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CVE-2026-84194

LibreNMS 23.10.0 before 26.4.0 OS Command Injection via Hostname

No known exploitation. EPSS puts it in the 75th percentile. Fixed in 26.4.0.

CVSS —Not scoredEPSS percentile75th1.5% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix26.4.0Upgrade to this build

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • LibrenmsAffected: ≥ 23.10.0, < 26.4.0Upgrade to: 26.4.0Stated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS75th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

1.5% chance of exploitation activity in the next 30 days, which ranks it in the 75th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

6 events over 7 days, from the signal feeds we watch.

  1. Record updated
  2. Record updated
  3. Publishedweakness classified, att&ck mapped, record updated

Affected products

Technical detail

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

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