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TI-2026-71170 Aliases CVE-2026-109354GHSA-hr7h-8h3p-w7rx

Path traversal in LibreNMS lets users read unauthorized RRD data

Priority LOW 24CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

LibreNMS before 26.9.0 contains a path traversal flaw (CWE-22) in its NFSen channel handling. Improper path handling of the channel parameter lets an authenticated user with access to one NFSen-enabled device read RRD data for devices outside their authorized scope, including traffic and NetFlow graphs.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

LibreNMS before 26.9.0 contains a path traversal vulnerability in nfsen_channel_common.inc.php that allows authenticated users to read unauthorized RRD data by injecting ../ sequences into the channel parameter. Attackers with access to one NFSen-enabled device can request graph.php with a traversed channel value to view traffic and NetFlow graphs of devices outside their authorized scope.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00275 20th percentileScored 2026-11-07
Fix Fixed librenms (librenms): 26.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
librenmslibrenmsbefore 26.9.026.9.0Patch availableCNA
  • librenms Vendorlibrenms Affected before 26.9.0 Fixed in 26.9.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*——librenms
  • cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* Versions — — ·librenms

Remediation

Update LibreNMS to version 26.9.0, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA librenms (librenms) Fixed in 26.9.0

Fixed in the same release

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

  • Release ·

    librenms 26.9.0

    6 records Highest priority Priority HIGH 1 HIGH, 2 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-71173 LDAP filter injection in LibreNMS allows authentication bypassPriority HIGH 75
    • TI-2026-71169 SQL injection in LibreNMS notifications lets users read password hashesPriority MEDIUM 64
    • TI-2026-71168 Stored cross-site scripting in LibreNMS wireless sensor descriptionsPriority MEDIUM 57
    Show all 6 records →

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109354
  2. 2026-10-12 Alias added: GHSA-hr7h-8h3p-w7rx
  3. 2026-10-13 CISA SSVC decision points changed

References

Advisory 1

  • TI-2018-14479 LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the… CVSS 3.0CRITICAL 9.8
  • TI-2026-71173 LDAP filter injection in LibreNMS allows authentication bypass CVSS 4.0CRITICAL 9.2
  • TI-2026-59134 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion CVSS 4.0CRITICAL 9.2
  • TI-2026-57885 LibreNMS before 26.7.0 Stored XSS via Oxidized API CVSS 4.0CRITICAL 9.2
  • TI-2022-03735 Insufficient Session Expiration in librenms/librenms CVSS 3.1CRITICAL 9.8
  • TI-2026-57886 LibreNMS before 26.5.0 Remote Code Execution via AboutController CVSS 4.0HIGH 8.7
See all 123 →

Sources

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