CVE-2023-0420: The Custom Post Type and Taxonomy GUI Manager WordPress plugin through 1.1 does not have CSRF, and is lacking

Q: How do I fix CVE-2023-0420?

custom post type and taxonomy gui manager: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-0420 being exploited?

CVE-2023-0420 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-0420 affect?

CVE-2023-0420 affects custom post type and taxonomy gui manager. Severity is medium (CVSS 4.8). The Custom Post Type and Taxonomy GUI Manager WordPress plugin through 1.1 does not have CSRF, and is lacking sanitising as well as escaping in some parameters, allowing attackers to make a logged in admin put Stored Cross-Site Scripting pa

Q: How urgent is CVE-2023-0420?

Priority 25/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2023-0420 is a medium-severity flaw (CVSS 4.8) affecting custom post type and taxonomy gui manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Custom Post Type and Taxonomy GUI Manager WordPress plugin through 1.1 does not have CSRF, and is lacking sanitising as well as escaping in some parameters, allowing attackers to make a logged in admin put Stored Cross-Site Scripting payloads via CSRF

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Published	2023-04-24
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: custom post type and taxonomy gui manager project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-04-24 19:15 UTCPublished CVE record published
2026-06-17 05:25 UTCUpdated Record last modified

custom post type and taxonomy gui manager project custom post type and taxonomy gui manager UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy custom-post-type-and-taxonomy-gui-manager || rpm -q custom-post-type-and-taxonomy-gui-manager || custom-post-type-and-taxonomy-gui-manager --version

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade custom-post-type-and-taxonomy-gui-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade custom-post-type-and-taxonomy-gui-manager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-0420?

custom post type and taxonomy gui manager: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2023-0420 being exploited?

CVE-2023-0420 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-0420 affect?

CVE-2023-0420 affects custom post type and taxonomy gui manager. Severity is medium (CVSS 4.8). The Custom Post Type and Taxonomy GUI Manager WordPress plugin through 1.1 does not have CSRF, and is lacking sanitising as well as escaping in some parameters, allowing attackers to make a logged in admin put Stored Cross-Site Scripting pa

How urgent is CVE-2023-0420?

Priority 25/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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