CVE-2023-48295Public exploitNetwork attack vector

Session-cookie theft via unescaped device-group names

Published Nov 17, 2023 · Updated Aug 10, 2024

Stored cross-site scripting in LibreNMS before 23.11.0 allows remote authenticated users to run JavaScript via a crafted device-group name. DeviceGroupController inserts the stored name into create, update, and deletion messages without HTML encoding, causing browsers to interpret it as markup. A low-privileged account must create the group, and another authenticated user must trigger a popup; successful exploitation can expose session cookies.

CVSS severity6.3
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in LibreNMS before 23.11.0 allows remote authenticated users to run JavaScript via a crafted device-group name. DeviceGroupController inserts the stored name into create, update, and deletion messages without HTML encoding, causing browsers to interpret it as markup. A low-privileged account must create the group, and another authenticated user must trigger a popup; successful exploitation can expose session cookies.

The record

CVE
CVE-2023-48295
Published
Nov 17, 2023
Updated
Aug 10, 2024
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=< 23.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LibreNMS · LibreNMSversion=< 23.11.0

Published CVSS scores

6.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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')
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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