CVE-2026-2126

The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 20260113. This is due to the `usp_get_submitted_category()` function accepting user-submitted category IDs from the POST body without validating them against the admin-configured allowed categories stored in `usp_options['categories']`. This makes it possible for unauthenticated attackers to assign submitted posts to arbitrary categories, including restricted ones, by crafting a direct POST request with manipulated `user-submitted-category[]` values, bypassing the frontend category restrictions.

Score

CVSS 3.1 5.3 Medium

Status

Deferred - security@wordfence.com

Published

2026-02-18

Last modified

2026-04-08

Weaknesses

CWE-863

Affected products

• User Submitted Posts Enable Users To Submit Posts From The Front End (Specialk)

References

• https://plugins.trac.wordpress.org/browser/user-submitted-posts/tags/20260113/user-submitted-posts.php#L1431
• https://plugins.trac.wordpress.org/browser/user-submitted-posts/tags/20260113/user-submitted-posts.php#L298
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3463696%40user-submitted-posts%2Ftrunk…
• https://www.wordfence.com/threat-intel/vulnerabilities/id/02c5e3ad-5cc3-40b1-a15a-10d53383abe6?source=cve