CVE-2026-77807: Acyba Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For WordPress

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 11.0.4 via the `user[name]` Parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires "Embed images" option in AcyMailing configuration being enabled.

Affected products

• Acyba Acymailing – An Ultimate Newsletter Plugin And Marketing Automation Solution For WordPress: up to and including 11.0.4

Published 2026-09-11. Last modified 2026-09-11.