CVE-2026-84190

Summary

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable file and trigger code execution by accessing the /about endpoint.

Affected Software

Weaknesses

• CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7

References

• https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7
• https://www.vulncheck.com/advisories/librenms-before-26.5.0-remote-code-execution-via-aboutcontroller

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