CVE-2026-66602 HIGH

CVE-2026-66602: WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability

Vendor Devitems
Product HashBar – WordPress Notification Bar
Weakness CWE-352 · CSRF
Published August 18, 2026
Last update August 19, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Cross-Site Request Forgery (CSRF) vulnerability in DevItems HashBar – WordPress Notification Bar allows Cross Site Request Forgery. This issue affects HashBar – WordPress Notification Bar: from n/a through 2.0.0.

Explanation of Vulnerability in Simple Terms

02Summary

HashBar WordPress notification bar plugin versions up to 2.0.0 are vulnerable to cross-site request forgery (CSRF) attacks. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unauthorized actions on the site without the admin's knowledge or consent. This could allow changes to notification bar settings or other plugin configurations.

What an attacker can do

03Attacker Capabilities

Perform unauthorized actions on the site by tricking an admin into visiting a malicious webpage.

Potential impact on your site

04Site Impact

Attackers can modify notification bar settings or plugin configuration without your permission if an admin visits a malicious link.

Conditions required to exploit

05Prerequisites

Site admin must be logged in and visit a page controlled by the attacker.

Key dates

06Disclosure timeline

August 18, 2026 CVE published
August 19, 2026 Record updated

Related vulnerabilities

08Related CVE