CVE-2026-11588: Unknown Eonsr Aeo Agent

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

The EONSR AEO Agent WordPress plugin through 3.7.9 does not perform any authorisation check on one of its REST API routes and disables HTML sanitisation before saving the post, allowing unauthenticated attackers to create administrator-attributed published posts containing arbitrary web scripts that execute in the browser of any visitor, including administrators (Stored XSS).

Affected products

• Unknown Eonsr Aeo Agent: up to and including 3.7.9

Published 2026-08-06. Last modified 2026-08-26.