WordPress security changelog
MEDIUM CVE-2026-109982 Deferred

MB Custom Post Types & Custom Taxonomies: Missing authorization

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2 does not perform a capability check or validate a nonce on its migration actions, allowing any authenticated user, such as a subscriber, to trigger a one-way migration that creates published records and permanently deletes a companion MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2's entire post-type and taxonomy configuration. The export supplies no additional endpoint, action, parameter or function details beyond those described above.

CVE / CNA score 4.2 CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
NVD score Pending NVD has not published its own CVSS assessment.
Component
MB Custom Post Types & Custom Taxonomies
Plugin slug
mb-custom-post-types-custom-taxonomies
Affected
< 2.12.2
Safe version
2.12.2
Published
Oct 16, 2026
Weakness
CWE-862 — Missing Authorization

This CVE was published Oct 16, 2026 and is one of 4 known issues for this plugin.

What to do

Update, patch or deactivate.

Update MB Custom Post Types & Custom Taxonomies to 2.12.2 or a later supported release in the applicable branch. The completed authoritative record confirms this fixed version for the disclosed issue.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2 does not perform a capability check or validate a nonce on its migration actions, allowing any authenticated user, such as a subscriber, to trigger a one-way migration that creates published records and permanently deletes a companion MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2's entire post-type and taxonomy configuration.

CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

References

Primary and upstream sources