CVE-2026-27423 MEDIUM

CVE-2026-27423: WordPress Participants Database plugin <= 2.7.8.4 - Broken Access Control vulnerability

Vendor Roland Barker

Product Participants Database

Weakness CWE-862 · Missing authorization

Published July 23, 2026

Last update July 23, 2026

View on NVD All CVEs

CVSS base score

4.3/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality None

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Subscriber Broken Access Control in Participants Database <= 2.7.8.4 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Participants Database through version 2.7.8.4 lacks proper authorization checks, allowing authenticated users to modify data they should not have access to. An attacker with a low-privilege account can alter records without proper permission validation. The vulnerability affects the integrity of stored data but does not expose sensitive information or cause service disruption.

What an attacker can do

03Attacker Capabilities

Modify database records without proper authorization as a low-privilege authenticated user.

Potential impact on your site

04Site Impact

Unauthorized changes to participant records or other data by users with limited permissions.

Conditions required to exploit

05Prerequisites

Attacker must have a valid low-privilege account on the site; no user interaction required.

Key dates

06Disclosure timeline

July 23, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-27423 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

Related vulnerabilities

Identifiers

CVE CVE-2026-27423

CWE CWE-862

CVSS 4.3 / MEDIUM

Affected versions