Main Vulnerability Database SB2026042414

SB2026042414 - Cross-site scripting in LibreNMS

Published: April 24, 2026

Security Bulletin ID SB2026042414

CSH Severity

Low

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Data manipulation

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2025-55296)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary JavaScript in another administrator's browser.

The vulnerability exists due to cross-site scripting in the Alert Template name field when creating and rendering alert templates. A remote privileged user can submit a crafted template name to execute arbitrary JavaScript in another administrator's browser.

Only administrator accounts that access the Alert Templates page are affected.

Remediation

Install update from vendor's website.

References

https://github.com/librenms/librenms/security/advisories/GHSA-vxq6-8cwm-wj99