CVE-2019-12276: Grandnode

High severity, CVSS 7.5. EPSS: 57.1% chance of exploitation in the next 30 days.

A Path Traversal vulnerability in Controllers/LetsEncryptController.cs in LetsEncryptController in GrandNode 4.40 allows remote, unauthenticated attackers to retrieve arbitrary files on the web server via specially crafted LetsEncrypt/Index?fileName= HTTP requests. A patch for this issue was made on 2019-05-30 in GrandNode 4.40.

Affected products

• Grandnode Grandnode: version 4.40 only

Published 2019-06-05. Last modified 2026-06-17.