VulnerabilityAnalyzed

CVE-2025-55296

A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature.

MEDIUM 5.4EPSS 12.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 12.5%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.1: 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS: 12.46% probability · 96th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: librenms/librenms
Source: security-advisories@github.com

References

https://github.com/librenms/librenms/commit/8ade3d827d317f5ac4b336617aafff865f825958Patch
https://github.com/librenms/librenms/security/advisories/GHSA-vxq6-8cwm-wj99Exploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.