CVE-2022-3823Network attack vector

Stored XSS via unescaped plugin settings

Published Nov 28, 2022 · Updated Apr 25, 2025

Stored XSS in Nikel Beautiful Cookie Consent Banner before 2.9.1 allows remote authenticated users to inject scripts through plugin settings. The plugin stores multiple administrator-supplied setting values without adequate input sanitization and later emits them into generated pages without output escaping. Administrator privileges are required, and the script runs when another user loads an affected page even where unfiltered_html is disabled, including WordPress multisite.

CVSS severity4.8
Medium
EPSS probability0.47%
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 Nikel Beautiful Cookie Consent Banner before 2.9.1 allows remote authenticated users to inject scripts through plugin settings. The plugin stores multiple administrator-supplied setting values without adequate input sanitization and later emits them into generated pages without output escaping. Administrator privileges are required, and the script runs when another user loads an affected page even where unfiltered_html is disabled, including WordPress multisite.

The record

CVE
CVE-2022-3823
Published
Nov 28, 2022
Updated
Apr 25, 2025
Vendor
Nikel
Product
Beautiful Cookie Consent Banner
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 25, 2025Record 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 <2.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Nikel · Beautiful Cookie Consent Bannerversion=0 <2.9.1

Published CVSS scores

4.8CISA-ADPCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Cross-Site Scripting (XSS)
T1059.007JavaScript/JScript

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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