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CVE-2023-4978

22
FAUCET Score

CVE-2023-4978 is a DOM-based Cross-site Scripting (XSS) vulnerability affecting LibreNMS installations prior to version 23.9.0. This medium-severity vulnerability, rated 6.1 CVSS, allows an unauthenticated attacker to inject malicious scripts into a user's browser, requiring user interaction to trigger, potentially leading to information disclosure or limited integrity impact. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 23.9.0CPE matchmatch criteria
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.0CRITICAL

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 47th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.1 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: 23.9.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-qjpw-rg56-jh8vmedium

LibreNMS Cross-site Scripting vulnerability

Sep 15, 2023

References

github.com / librenms/librenms/commit/e4c46a45364cb944b94abf9b83f0558b2c4c2fb7
Patch
huntr.dev / bounties/cefd9295-2053-4e6e-a130-7e1f845728f4
ExploitPatchThird Party Advisory