CVE-2017-8793: Accellion File Transfer Appliance

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue was discovered on Accellion FTA devices before FTA_9_12_180. By sending a POST request to home/seos/courier/web/wmProgressstat.html.php with an attacker domain in the acallow parameter, the device will respond with an Access-Control-Allow-Origin header allowing the attacker to have site access with a bypass of the Same Origin Policy.

Affected products

• Accellion File Transfer Appliance: up to and including 9_12_40

Published 2017-05-05. Last modified 2026-06-17.