Read the docs
TI-2025-34952 Aliases CVE-2025-55296GHSA-vxq6-8cwm-wj99

LibreNMS allows stored XSS in Alert Template name field

Priority MEDIUM 58CWE-79Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

librenms is a community-based GPL-licensed network monitoring system. A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts. This vulnerability is fixed in 25.8.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.17039 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed librenms (librenms): 25.8.0librenms/librenms (Packagist): 25.8.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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 25.8.025.8.0Patch availableCNA
—librenms/librenms (Packagist)before 25.8.025.8.0Patch availableGHSA-vxq6-8cwm-wj99
  • librenms Vendorlibrenms Affected before 25.8.0 Fixed in 25.8.0 Patch available CNA
  • librenms/librenms (Packagist) Vendor— Affected before 25.8.0 Fixed in 25.8.0 Patch available GHSA-vxq6-8cwm-wj99

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*before 25.8.0Vulnerablelibrenms
  • cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* Versions before 25.8.0 Vulnerable ·librenms

Remediation

  • Fix · CNA librenms (librenms) Fixed in 25.8.0
  • Fix · GHSA-vxq6-8cwm-wj99 librenms/librenms (Packagist) Fixed in 25.8.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55296
  2. 2026-10-03 Alias added: GHSA-vxq6-8cwm-wj99

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2018-14479 LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the… CVSS 3.0CRITICAL 9.8
  • TI-2026-59134 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
See all 105 →

Sources

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