# PublishPress Permissions: Access Control, Content Permissions, User Access <= 4.9.1 - Authenticated (Contributor+) Missing Authorization to Enable Permissions Filtering for Post Types and Taxonomies

- **ID:** WPSEC-2026-3121
- **Plugin:** PublishPress Permissions: Access Control, Content Permissions, User Access (`press-permit-core`), https://wordpress.org/plugins/press-permit-core/
- **Affected versions:** all versions before 5.0.0
- **Fixed in:** 5.0.0 (Update to 5.0.0 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
- **Weakness:** CWE-862
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-11-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/press-permit-core
- **Fix released:** 2026-11-13
- **Published:** 2026-11-14
- **URL:** https://wpsec.com/vuln/WPSEC-2026-3121/

## Description

The PublishPress Permissions plugin for WordPress is vulnerable to unauthorized settings modification in all versions up to, and including, 4.9.1 due to a missing capability check and missing nonce validation on the 'pp_enable_post_type' parameter processed during post and term saves. This makes it possible for authenticated attackers with contributor-level access and above, who can save a post or term, to enable permissions filtering for a post type or taxonomy, changing the site's permissions configuration.

## References

- https://wpsec.com/vuln/WPSEC-2026-3121/
- https://plugins.svn.wordpress.org/press-permit-core/tags/5.0.0/
- https://wordpress.org/plugins/press-permit-core/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-3121/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.