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CVE-2025-55296

25
FAUCET Score

CVE-2025-55296 describes a stored Cross-Site Scripting (XSS) vulnerability in LibreNMS versions up to 25.6.0, specifically within the Alert Template creation feature. An authenticated administrator can inject malicious JavaScript, which executes when the template is viewed, potentially compromising other administrative accounts. The vulnerability has a CVSS score of 5.4 (Medium), indicating a low attack complexity and requiring user interaction, but with a network attack vector. It could lead to limited confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 25.8.0CPE matchmatch criteria
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
11.89%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1189 is in the 99th percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: librenms/librenmsFixed in: 25.8.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-vxq6-8cwm-wj99medium

LibreNMS allows stored XSS in Alert Template name field

Aug 18, 2025

References

github.com / librenms/librenms/commit/8ade3d827d317f5ac4b336617aafff865f825958
Patch
github.com / librenms/librenms/security/advisories/GHSA-vxq6-8cwm-wj99
ExploitVendor Advisory