Incorrect Authorization in User Submitted Posts Plugin for WordPress
CVE-2026-2126

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
User Submitted Posts – Enable Users To Submit Posts From The Front End
Vendor
CVE Published:
18 February 2026

What is CVE-2026-2126?

The User Submitted Posts plugin for WordPress is vulnerable due to a lack of validation on user-submitted category IDs. The usp_get_submitted_category() function allows attackers to send unauthorized category requests by manipulating POST data, which bypasses configured category restrictions. This flaw permits unauthenticated users to submit posts to arbitrary categories, including those that are supposed to be restricted, posing a significant security risk.

Affected Version(s)

User Submitted Posts – Enable Users to Submit Posts from the Front End 0 <= 20260113

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/user-submitted...
https://plugins.trac.wordpress.org/browser/user-submitted...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

M Indra Purnama
.