CVE-2023-0066Public exploitNetwork attack vector

Stored script execution via unescaped shortcode attribute

Published Mar 13, 2023 · Updated Feb 27, 2025

Stored XSS in Codeermeneer Companion Sitemap Generator 4.5.1.1 and earlier allows remote authenticated users to execute script via a shortcode. The html-sitemap shortcode returns its columns attribute in page output without validation or escaping, allowing an event handler to enter rendered markup. Contributor-level access is sufficient to store the shortcode, and the published proof of concept requires a user to view and interact with the affected page.

CVSS severity5.4
Medium
EPSS probability0.44%
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 Codeermeneer Companion Sitemap Generator 4.5.1.1 and earlier allows remote authenticated users to execute script via a shortcode. The html-sitemap shortcode returns its columns attribute in page output without validation or escaping, allowing an event handler to enter rendered markup. Contributor-level access is sufficient to store the shortcode, and the published proof of concept requires a user to view and interact with the affected page.

The record

CVE
CVE-2023-0066
Published
Mar 13, 2023
Updated
Feb 27, 2025
Vendor
Codeermeneer
Product
Companion Sitemap Generator
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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 <=4.5.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Codeermeneer · Companion Sitemap Generatorversion=0 <=4.5.1.1

Published CVSS scores

5.4CISA-ADPCVSS: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-79Cross-Site Scripting (XSS)
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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