# Schedule Post Changes With PublishPress Future: Unpublish, Delete, Change Status, Trash, Change Categories <= 4.10.7 - Authenticated (Contributor+) Missing Authorization to Arbitrary Term Creation

- **ID:** WPSEC-2026-1400
- **Plugin:** Schedule Post Changes With PublishPress Future: Unpublish, Delete, Change Status, Trash, Change Categories (`post-expirator`), https://wordpress.org/plugins/post-expirator/
- **Affected versions:** all versions before 4.11.0
- **Fixed in:** 4.11.0 (Update to 4.11.0 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 Low, affected versions Low (as of 2026-10-21)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/post-expirator
- **Fix released:** 2026-10-20
- **Published:** 2026-10-21
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1400/

## Description

The Schedule Post Changes With PublishPress Future plugin for WordPress is vulnerable to unauthorized term creation via the taxonomy terms of a scheduled future action in all versions up to, and including, 4.10.7, due to the normalizeTermsCreatingIfNecessary function calling wp_insert_term without checking the taxonomy's edit_terms capability or verifying that the taxonomy belongs to the post type. This makes it possible for authenticated attackers with Contributor-level access and above who have been granted the publishpress_future_expire_post capability to create arbitrary terms, such as categories, in any registered taxonomy.

## References

- https://wpsec.com/vuln/WPSEC-2026-1400/
- https://plugins.svn.wordpress.org/post-expirator/tags/4.11.0/
- https://wordpress.org/plugins/post-expirator/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1400/

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.