MB Custom Post Types & Custom Taxonomies 2.4.0 - 2.12.2 - Missing Authorization
Strategic Overview
- Status
- Patched in 2.12.3
- Affected Plugin
- MB Custom Post Types & Custom Taxonomies
- Affected Version
2.4.0 – 2.12.2- CVSS
- 4.3Medium
- Weakness type
- CWE-863 · Incorrect Authorization
- CVE
CVE-2026-110011
At a glance
CVE-2026-110011 is a medium-severity Incorrect Authorization vulnerability in the MB Custom Post Types & Custom Taxonomies WordPress plugin, affecting versions 2.4.0 – 2.12.2. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 2.12.3; sites on affected versions should update now. Disclosed October 2026, reported by RIA Labs.
Vulnerability Overview
The MB Custom Post Types & Custom Taxonomies plugin for WordPress is vulnerable to unauthorized access in versions 2.4.0 through 2.12.2. This is due to a missing capability check on a function. This makes it possible for authenticated attackers, with contributor-level access and above, to perform an unauthorized action.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-863: Incorrect Authorization
Reaching this weakness in MB Custom Post Types & Custom Taxonomies 2.4.0 – 2.12.2 takes a caller who can reach the endpoint. Incorrect authorization means a permission check exists but evaluates the wrong thing, so it passes for callers it was meant to stop.
The action runs for users the code intended to exclude, with the same effect as having no check at all. For MB Custom Post Types & Custom Taxonomies the fix is 2.12.3: builds 2.4.0 – 2.12.2 are affected, anything from 2.12.3 onward is not.
Remediation
Update to version 2.12.3, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: MB Custom Post Types & Custom Taxonomies 2.12.3 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in MB Custom Post Types & Custom Taxonomies
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