What the vulnerability does
01Description
The SEO Flow by LupsOnline plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the checkBlogAuthentication() and checkCategoryAuthentication() functions in all versions up to, and including, 2.2.1. These authorization functions only implement basic API key authentication but fail to implement WordPress capability checks. This makes it possible for unauthenticated attackers to create, modify, and delete blog posts and categories.
Explanation of Vulnerability in Simple Terms
02Summary
SEO Flow by LupsOnline versions 2.2.1 and earlier lack proper authorization checks, allowing unauthenticated attackers to modify site data through network requests. The vulnerability does not expose sensitive information or disrupt availability, but enables unauthorized changes to content or settings. Site administrators should update to a version newer than 2.2.1 as soon as available.
What an attacker can do
03Attacker Capabilities
Modify site data or settings without authentication.
Potential impact on your site
04Site Impact
Unauthorized changes to site content, settings, or configuration without your knowledge or consent.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
February 4, 2026
CVE published
April 8, 2026
Record updated
