TI-2026-75270 Aliases CVE-2026-109982 GHSA-45hq-3vxw-q94x

Missing authorization in MB Custom Post Types & Custom Taxonomies

LOW 19CWE-862Published 2026-10-16 · Updated 2026-10-16

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.2 does not check capabilities or validate a nonce on its migration actions (CWE-862). Any authenticated user, such as a subscriber, can trigger a one-way migration that creates published records and permanently deletes the post type and taxonomy configuration. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00177 7th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed MB Custom Post Types & Custom Taxonomies (Unknown): 2.12.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	MB Custom Post Types & Custom Taxonomies	before 2.12.2	2.12.2	Patch available	CNA

MB Custom Post Types & Custom Taxonomies VendorUnknown Affected before 2.12.2 Fixed in 2.12.2 Patch available CNA

Remediation

Upgrade the MB Custom Post Types & Custom Taxonomies WordPress plugin to version 2.12.2.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA MB Custom Post Types & Custom Taxonomies (Unknown) Fixed in 2.12.2

Timeline

2026-10-16 Threatist record created from CVE-2026-109982
2026-10-16 Alias added: GHSA-45hq-3vxw-q94x

References

Exploit 1

https://wpscan.com/vulnerability/27787d4e-1633-4eb6-bcf4-0a8586df3d47/

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences