CVE intelligence and bounded remediation

CVE-2023-48295 — Librenms Librenms security vulnerability

Medium CVSS 6.3

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems. Affected versions are subject to a cross site scripting (XSS) vulnerability in the device group popups. This issue has been addressed in commit `faf66035ea` which has been included in release version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Severity
Medium
CVSS
6.3 (3.1)
Published
2023-11-17
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • librenms / librenms

Matched remediation archetype

Cross-site scripting and unsafe browser output

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Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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