CVE-2022-2941Network attack vector

Admin stored XSS via unsanitized naming fields

Published Sep 6, 2022 · Updated Apr 8, 2026

Stored cross-site scripting in WP-UserOnline 2.88.0 and earlier allows remote authenticated users to inject JavaScript via Naming Conventions fields. The settings validation path stores naming values without sanitization and output escaping, allowing script execution when a user views the affected page. Exploitation requires administrative privileges and is limited to multisite installations or sites with unfiltered_html disabled; the consequence is script execution in another user's browser.

CVSS severity4.8
Medium
EPSS probability7.25%
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 WP-UserOnline 2.88.0 and earlier allows remote authenticated users to inject JavaScript via Naming Conventions fields. The settings validation path stores naming values without sanitization and output escaping, allowing script execution when a user views the affected page. Exploitation requires administrative privileges and is limited to multisite installations or sites with unfiltered_html disabled; the consequence is script execution in another user's browser.

The record

CVE
CVE-2022-2941
Published
Sep 6, 2022
Updated
Apr 8, 2026
Vendor
Lester 'GaMerZ' Chan
Product
WP-UserOnline
Classifications
CWE-79, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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 <=2.88.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Lester 'GaMerZ' Chan · WP-UserOnlineversion=0 <=2.88.0

Published CVSS scores

5.5WordfenceCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
4.8NVDCVSS: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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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