CVE-2017-1002201: Debian Linux

Medium severity, CVSS 6.1. EPSS: 1.5% chance of exploitation in the next 30 days.

In haml versions prior to version 5.0.0.beta.2, when using user input to perform tasks on the server, characters like < > " ' must be escaped properly. In this case, the ' character was missed. An attacker can manipulate the input to introduce additional attributes, potentially executing code.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Haml Haml: before 5.0.0 (fixed in 5.0.0)

Published 2019-10-15. Last modified 2026-06-17.