CVE-2017-12964: Libsass

High severity, CVSS 7.5. EPSS: 1.8% chance of exploitation in the next 30 days.

There is a stack consumption issue in LibSass 3.4.5 that is triggered in the function Sass::Eval::operator() in eval.cpp. It will lead to a remote denial of service attack.

Affected products

• Libsass Libsass: version 3.4.5 only

Published 2017-08-18. Last modified 2026-06-17.