CVE-2019-18798: Sass-Lang Libsass

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents in ast_sel_weave.cpp.

Affected products

• Sass-Lang Libsass: before 3.6.3 (fixed in 3.6.3)

Published 2019-11-06. Last modified 2026-06-17.