CVE-2017-0356: Debian Linux

Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.

A flaw, similar to to CVE-2016-9646, exists in ikiwiki before 3.20170111, in the passwordauth plugin's use of CGI::FormBuilder, allowing an attacker to bypass authentication via repeated parameters.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Ikiwiki Ikiwiki: before 3.20170111 (fixed in 3.20170111)

Published 2018-04-13. Last modified 2026-06-17.