CVE-2024-51495Public exploitNetwork attack vector

Authenticated cross-account script execution via unencoded overwrite_ip

Published Nov 15, 2024 · Updated Nov 15, 2024

Stored XSS in LibreNMS before 24.10.0 allows remote authenticated users to execute JavaScript in other users' sessions. The Device Overview renderer in includes/html/dev-overview-data.inc.php inserts the stored overwrite_ip value into HTML without output encoding. Device-editing privileges are required to store the payload, and another user must visit the overview page; execution then supports unauthorized actions with that user's session.

CVSS severity4.8
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in LibreNMS before 24.10.0 allows remote authenticated users to execute JavaScript in other users' sessions. The Device Overview renderer in includes/html/dev-overview-data.inc.php inserts the stored overwrite_ip value into HTML without output encoding. Device-editing privileges are required to store the payload, and another user must visit the overview page; execution then supports unauthorized actions with that user's session.

The record

CVE
CVE-2024-51495
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <24.10.0
  2. Affected versionversion=< 24.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LibreNMS · LibreNMSversion=0 <24.10.0; version=< 24.10.0

Published CVSS scores

7.5LibreNMS GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L
4.8GitHub CNACVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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