CVE-2026-25425 HIGH

CVE-2026-25425: WordPress User Registration plugin <= 5.1.2 - Broken Access Control vulnerability

Vendor Themegrill

Product User Registration

Weakness CWE-862 · Missing authorization

Published June 15, 2026

Last update June 15, 2026

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity None

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated Broken Access Control in User Registration <= 5.1.2 versions.

Explanation of Vulnerability in Simple Terms

02Summary

ThemeGrill User Registration versions up to 5.1.2 lack proper authorization checks, allowing unauthenticated attackers to disrupt the site's availability. An attacker can send requests over the network without authentication to trigger a denial-of-service condition. Site administrators should update to a version newer than 5.1.2 immediately.

What an attacker can do

03Attacker Capabilities

Make the site unavailable or unresponsive by sending network requests without logging in.

Potential impact on your site

04Site Impact

Your site may become slow or unavailable if targeted; users cannot register or access the site.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

June 15, 2026 CVE published

June 15, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-25425 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

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