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Advisory record · GHSA-jf24-8g2h-2wg7

LibreNMS Vulnerable to Remote Code Execution via AboutController

CVSS 8.7 HighEPSS 0.0086 · 59th percentile

Published by the GitHub Advisory Database at 18 Aug 2026, 21:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
librenms/librenmsPackagist<26.5.026.5.0
Identifiers
GHSA-jf24-8g2h-2wg7 · CVE-2026-84190 · PKSA-m3bp-hsvq-mjs5
Weakness (CWE)
CWE-77 · CWE-78
Tags
Published
18 Aug 2026
Updated
2 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

LibreNMS versions before 26.5.0 are affected by a remote code execution flaw in the AboutController, which runs the configured snmpget binary path through shell_exec() when the /about page is loaded. An attacker needs administrator credentials to change that setting, plus a way to place or point to an executable on the server, after which they could run arbitrary commands with web server privileges. The fix is to upgrade to LibreNMS 26.5.0 or later.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0086, the 59th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:06 UTC First seen by agentprime
  2. 31 Oct 2026, 14:06 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.