What is CVE-2026-110010?

CVE-2026-110010 is a medium-severity vulnerability in Mb Custom Post Types & Taxonomies, classified under Missing Authorization. CVSS score: 4.8/10. Published 2026-10-22.

How severe is CVE-2026-110010?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Auth bypass in Mb Custom Post Types & Taxonomies

CVE-2026-110010

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.3 does not perform any capability or authentication check before allowing an unauthenticated request to re-run a legacy data migration, letting anyone revert a custom post type or taxonomy definition on sites upgraded from a pre-2.0 release back to its pre-upgrade state. This discards configuration changes an administrator made after upgrading and, where those changes had restricted a definition's visibility, silently re-exposes the definition and its content to anonymous visitors.

Vulnerability class: Broken Access Control

Published 2026-10-22 · last modified 2026-10-22.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Mb Custom Post Types & Taxonomies

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

wpscan.com/vulnerability/6727cd6a-335b-472e-9acf-e4e95b190578/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-110010?: CVE-2026-110010 is a medium-severity vulnerability in Mb Custom Post Types & Taxonomies, classified under Missing Authorization. CVSS score: 4.8/10. Published 2026-10-22.
How severe is CVE-2026-110010?: Medium severity. CVSS v3 base score is 4.8 out of 10.