CVE-2022-0772Public exploitNetwork attack vector

Stored script execution via alert-rule display markup

Published Feb 27, 2022 · Updated Aug 2, 2024

Stored XSS in LibreNMS before 22.2.2 allows remote authenticated users to run script in another user's browser via an alert-rule display. The alert-rule list modal renders stored rule display content without first removing HTML tags; the patch adds strip_tags before output encoding. Administrator privileges are required to store the content, and another user's interaction triggers script execution in that user's browser context.

CVSS severity4.7
Medium
EPSS probability0.62%
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 22.2.2 allows remote authenticated users to run script in another user's browser via an alert-rule display. The alert-rule list modal renders stored rule display content without first removing HTML tags; the patch adds strip_tags before output encoding. Administrator privileges are required to store the content, and another user's interaction triggers script execution in that user's browser context.

The record

CVE
CVE-2022-0772
Published
Feb 27, 2022
Updated
Aug 2, 2024
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=unspecified <22.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

LibreNMS · LibreNMSversion=unspecified <22.2.2

Published CVSS scores

4.7huntr.devCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NVDAV:N/AC:M/Au:S/C:N/I:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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