CVE-2026-73403 MEDIUM

CVE-2026-73403: WordPress User Registration plugin <= 5.2.6 - Broken Access Control vulnerability

Vendor Wpeverest

Product User Registration

Weakness CWE-862 · Missing authorization

Published August 13, 2026

Last update August 13, 2026

View on NVD All CVEs

CVSS base score

5.3/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

Unauthenticated Broken Access Control in User Registration <= 5.2.6 versions.

Explanation of Vulnerability in Simple Terms

02Summary

User Registration through version 5.2.6 lacks proper authorization checks, allowing unauthenticated attackers to modify data on the site. The vulnerability requires no user interaction and can be exploited over the network. Site administrators should update to a version newer than 5.2.6 immediately.

What an attacker can do

03Attacker Capabilities

Modify site data without logging in or having permission to do so.

Potential impact on your site

04Site Impact

Unauthorized users can alter content or settings, potentially affecting site integrity and user trust.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 13, 2026 CVE published

August 13, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-73403 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

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