CVE-2017-12962: Libsass

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

There are memory leaks in LibSass 3.4.5 triggered by deeply nested code, such as code with a long sequence of open parenthesis characters, leading 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.