TI-2026-71171 Aliases CVE-2026-109355 GHSA-m63v-9j9m-6j88

Stored XSS in LibreNMS Tools Oxidized node list

LOW 23CWE-79Published 2026-10-12 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

LibreNMS before 26.9.0 contains a stored cross-site scripting flaw in get_oxidized_nodes_list() (CWE-79) that renders Oxidized API fields and SNMP sysName without escaping. An attacker who controls the Oxidized response or a device's SNMP sysName can inject script that runs in the browsers of users who view the Tools Oxidized page. The CVSS 4.0 vector requires user interaction and an unauthenticated network attacker.

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

Description from the CNA

LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in get_oxidized_nodes_list() that renders Oxidized API fields and SNMP sysName unescaped. Attackers controlling the Oxidized response or a device's SNMP sysName can inject script that executes in browsers of users viewing the Tools Oxidized page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00188 8th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
librenms	librenms	before 26.9.0	26.9.0	Patch available	CNA

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.

CPE	Versions	Role	Vendor
cpe:2.3:a:librenms:librenms::::::::	—	—	librenms

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

Remediation

Upgrade LibreNMS to version 26.9.0 or later, which fixes the issue. The sources list no other advisories for this flaw.

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 · 2026-10-12
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

2026-10-12 Threatist record created from CVE-2026-109355
2026-10-12 Alias added: GHSA-m63v-9j9m-6j88
2026-10-13 CISA SSVC decision points changed

References

Advisory 1

GitHub Security Advisory (GHSA-cjqw-76mh-jmpv)

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