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TI-2018-14479 Aliases CVE-2018-20434GHSA-62q7-qj6g-gvr7

LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the…

Priority HIGH 80CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the $_POST['community'] parameter to html/pages/addhost.inc.php during creation of a new device, and then making a /ajax_output.php?id=capture&format=text&type=snmpwalk&hostname=localhost request that triggers html/includes/output/capture.inc.php command mishandling.

Why it matters now

EPSS 0.71487 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—librenms/librenms (Packagist)——No fix listedGHSA-62q7-qj6g-gvr7
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • librenms/librenms (Packagist) Vendor— Affected — Fixed in — No fix listed GHSA-62q7-qj6g-gvr7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:librenms:librenms:1.46:*:*:*:*:*:*:*1.46Vulnerablelibrenms
  • cpe:2.3:a:librenms:librenms:1.46:*:*:*:*:*:*:* Versions 1.46 Vulnerable ·librenms

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20434
  2. 2026-10-03 Alias added: GHSA-62q7-qj6g-gvr7

References

Exploit 2

Advisory 2

Other 4

  • TI-2026-59134 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion CVSS 4.0CRITICAL 9.2
  • TI-2022-03735 Insufficient Session Expiration in librenms/librenms CVSS 3.1CRITICAL 9.8
  • TI-2022-03252 Deserialization of Untrusted Data in librenms/librenms CVSS 3.1HIGH 8.8
  • TI-2026-05445 OS command injection in librenms CVSS 4.0HIGH 8.5
  • TI-2024-34235 LibreNMS before 24.10.0 allows a remote attacker to execute arbitrary code via OS command… CVSS 3.1CRITICAL 9.1
  • TI-2023-25228 Rate limiting Bypass on login page in libreNMS CVSS 3.1HIGH 7.5
See all 105 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences