CVE-2024-50355Public exploitNetwork attack vector

Session compromise via unescaped device display names

Published Nov 15, 2024 · Updated Nov 15, 2024

Stored XSS in LibreNMS before 24.10.0 allows remote authenticated users with Admin access to run JavaScript in other users' sessions. LibreNMS stores an unsanitized device Display Name and inserts it into device links, overlib pop-ups, and the availability map without adequate HTML neutralization. An Admin must save the payload, and another user's browser must render an affected view; script execution can expose session data or perform actions as that user.

CVSS severity7.2
High
EPSS probability0.32%
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 with Admin access to run JavaScript in other users' sessions. LibreNMS stores an unsanitized device Display Name and inserts it into device links, overlib pop-ups, and the availability map without adequate HTML neutralization. An Admin must save the payload, and another user's browser must render an affected view; script execution can expose session data or perform actions as that user.

The record

CVE
CVE-2024-50355
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-79, T1539
Attack vector
network
Privileges
admin

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 privilegesadmin

What is affected?

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

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
7.2GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

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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