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CVE-2023-4347

53
FAUCET Score

CVE-2023-4347 is a reflected Cross-site Scripting (XSS) vulnerability affecting LibreNMS versions prior to 23.8.0. With a CVSS score of 5.4 (Medium), it requires user interaction and low privileges, allowing an attacker to inject malicious scripts, potentially leading to limited impact on confidentiality and integrity. While its FAUCET Risk Score is high at 98/100, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 23.8.0CPE matchmatch criteria
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
66.88%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.6688 is in the 100th percentile among its peer group of 15,224 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: 23.8.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-m6pf-cm3f-7876high

LibreNMS Cross-site Scripting vulnerability

Aug 15, 2023

References

github.com / librenms/librenms/commit/91c57a1ee54631e071b6b0c952d99c8ee892e824
Patch
huntr.dev / bounties/1f78c6e1-2923-46c5-9376-4cc5a8f1152f
ExploitThird Party Advisory