Unauthenticated Broken Access Control in User Registration Plugin by WordPress
CVE-2026-73403

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
User Registration
Vendor
CVE Published:
13 August 2026

What is CVE-2026-73403?

The User Registration Plugin for WordPress, specifically versions up to 5.2.6, contains a vulnerability that allows for unauthenticated users to bypass access controls. This could lead to unauthorized access to sensitive functionality within the plugin, potentially compromising user data and the integrity of the application. It is critical for site administrators to update to the latest version to mitigate the risk associated with this flaw.

Affected Version(s)

User Registration <= 5.2.6

References

https://patchstack.com/database/wordpress/plugin/user-reg...
vdb-entry

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

Ziming Zhang | Patchstack Bug Bounty Program
.