CVE-2017-11556: Libsass

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

There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.

Affected products

• Libsass Libsass: version 3.4.5 only

Published 2017-07-23. Last modified 2026-06-17.