Vulnerability Brief

CVE-2026-10083

What this means for your business

If you're using an outdated version of the APCu Manager WordPress plugin, a hacker could potentially inject malicious code into your website's admin area. This could allow them to take control of your website, steal sensitive information, or disrupt your operations.

Severity: HIGH
CVSS score: 7.5

Technical summary

The APCu Manager WordPress plugin before 4.5.0 does not escape APCu object-cache keys before rendering them in an admin-area page, leading to a Stored Cross-Site Scripting vulnerability. When a persistent object cache is enabled, cache keys derived from unsanitised user input (e.g. a transient name created by another APCu Manager WordPress plugin before 4.5.0 from an unauthenticated request) are output without escaping and execute arbitrary JavaScript in the session of an administrator viewing the page.