CVE-2024-51496Public exploitNetwork attack vector

Authenticated script execution via unvalidated metric reflection

Published Nov 15, 2024 · Updated Nov 15, 2024

Reflected XSS in LibreNMS before 24.10.0 allows remote authenticated users to execute JavaScript via a crafted metric parameter. The wireless.inc.php and health.inc.php views pass metric through basename(), then interpolate the result into no-sensor HTML without validating it against defined metric keys. Exploitation requires a signed-in user to load the crafted URL, after which the script runs in that user's browser session and can access session data or perform actions available to that user.

CVSS severity7.5
High
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

Reflected XSS in LibreNMS before 24.10.0 allows remote authenticated users to execute JavaScript via a crafted metric parameter. The wireless.inc.php and health.inc.php views pass metric through basename(), then interpolate the result into no-sensor HTML without validating it against defined metric keys. Exploitation requires a signed-in user to load the crafted URL, after which the script runs in that user's browser session and can access session data or perform actions available to that user.

The record

CVE
CVE-2024-51496
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-79, T1203
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

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L

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')
T1203Exploitation for Client Execution

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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