CVE-2023-0420Public exploitNetwork attack vector

Stored XSS via forged settings request

Published Apr 24, 2023 · Updated Feb 4, 2025

Stored XSS in Custom Post Type and Taxonomy GUI Manager through 1.1 allows remote attackers to inject script through a forged admin request. The create-post-type settings action accepts rt_cpt_name in a POST to cptctm-create-cpt without nonce validation or sufficient sanitization, then renders it without adequate escaping. An administrator must submit the forged form; the stored script then executes in the WordPress dashboard for Contributor-level users and above.

CVSS severity4.8
Medium
EPSS probability0.23%
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 Custom Post Type and Taxonomy GUI Manager through 1.1 allows remote attackers to inject script through a forged admin request. The create-post-type settings action accepts rt_cpt_name in a POST to cptctm-create-cpt without nonce validation or sufficient sanitization, then renders it without adequate escaping. An administrator must submit the forged form; the stored script then executes in the WordPress dashboard for Contributor-level users and above.

The record

CVE
CVE-2023-0420
Published
Apr 24, 2023
Updated
Feb 4, 2025
Vendor
wpgurudev
Product
Custom Post Type and Taxonomy GUI Manager
Classifications
CWE-352, CWE-79, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 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 <=1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wpgurudev · Custom Post Type and Taxonomy GUI Managerversion=0 <=1.1

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204User Execution

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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