CVE-2026-76562: Sidebar Manager Light <= 1.18 - Unauthenticated Stored Cross-Site Scripting via 'sbm_description' Parameter
The Sidebar Manager Light plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sbmdescription' parameter in all versions up to, and including, 1.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected Software
Event History
Frequently Asked Questions
Which installations are affected?
WordPress sites using the Sidebar Manager Light plugin in version 1.18 or earlier are affected. The provided data does not identify a fixed version.
Does exploitation require an authenticated WordPress account or user interaction?
No. The vulnerability is described as unauthenticated, and the attack vector requires no privileges or user interaction from the attacker.
What must happen for the injected script to execute?
An attacker must inject script content through the sbm_description parameter. The stored script executes when a user accesses a page containing the injected content.
What is the likely impact if exploitation succeeds?
The vulnerability can allow arbitrary web scripts to run in the context of users visiting an injected page. The supplied severity vector indicates low confidentiality and integrity impact, with no availability impact.