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CVE-2026-27016

CVE-2026-27016 · LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

This page contains facts from public vulnerability sources. Check the original advisory before updating.

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks strip_tags() sanitization while other fields (name, oid, datatype) are sanitized. The unsanitized value is stored in the database and rendered without HTML escaping. This issue is fixed in version 26.2.0.

CVSS 5.4 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • librenms

    Versions
    • >= 24.10.0, < 26.2.0: Affected

    No fix published

  • librenms/librenms Packagist

    Versions
    • 24.10.0
    • 24.10.1
    • 24.11.0
    • 24.12.0
    • 25.1.0
    • 25.10.0
    • 25.11.0
    • 25.12.0
    • 25.2.0
    • 25.3.0
    • 25.4.0
    • 25.5.0
    • 25.6.0
    • 25.7.0
    • 25.8.0
    • 25.9.0
    • 25.9.1
    • 26.1.0
    • 26.1.1
    Affected ranges
    • ECOSYSTEM: ≥ 24.10.0, < 26.2.0

    Update to 26.2.0

Original sources

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