CVE-2018-8741: Debian Linux

High severity, CVSS 8.8. EPSS: 4.2% chance of exploitation in the next 30 days.

A directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting server, related to ../ in the att_local_name field in Deliver.class.php.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Squirrelmail Squirrelmail: version 1.4.22 only

Published 2018-03-17. Last modified 2026-06-17.