What is CVE-2025-55296?

CVE-2025-55296 is a medium-severity vulnerability in Librenms, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2025-08-18.

How severe is CVE-2025-55296?

Medium severity. CVSS v3 base score is 5.5 out of 10.

XSS in Librenms

CVE-2025-55296

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.119 (95.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Librenms — versions < 25.8.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-55296?: CVE-2025-55296 is a medium-severity vulnerability in Librenms, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2025-08-18.
How severe is CVE-2025-55296?: Medium severity. CVSS v3 base score is 5.5 out of 10.