TI-2026-05445 Aliases CVE-2026-6204 GHSA-pr3g-phhr-h8fh

OS command injection in librenms

HIGH 72CWE-78Published 2026-04-13 · Updated 2026-04-13

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

LibreNMS versions before 26.3.0 are affected by an authenticated remote code execution vulnerability by abusing the Binary Locations config and the Netcommand feature. Successful exploitation requires administrative privileges. Exploitation could result in compromise of the underlying web server.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.07533 94th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix Fixed librenms (librenms): 26.3.0librenms/librenms (Packagist): 26.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
librenms	librenms	before 26.3.0	26.3.0	Patch available	CNA
—	librenms/librenms (Packagist)	1.48 to before 26.3.0	26.3.0	Patch available	GHSA-pr3g-phhr-h8fh

librenms Vendorlibrenms Affected before 26.3.0 Fixed in 26.3.0 Patch available CNA
librenms/librenms (Packagist) Vendor— Affected 1.48 to before 26.3.0 Fixed in 26.3.0 Patch available GHSA-pr3g-phhr-h8fh

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:librenms:librenms::::::::	before 26.3.0	Vulnerable	librenms

cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* Versions before 26.3.0 Vulnerable ·librenms

Remediation

Fix · CNA librenms (librenms) Fixed in 26.3.0
Fix · GHSA-pr3g-phhr-h8fh librenms/librenms (Packagist) Fixed in 26.3.0 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-04-13
librenms 26.3.0
2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2026-02335 Cross-site scripting in librenmsPriority MEDIUM 54
Show all 2 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-6204
2026-10-03 Alias added: GHSA-pr3g-phhr-h8fh
2026-10-25 EPSS moved to the 90th–95th percentile

References

Exploit 1

https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc

Advisory 2

Other 2

TI-2018-14479 LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the… CVSS 3.0CRITICAL 9.8
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-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