There is a stack consumption issue in all versions of LibSass, that is triggered in the function "Sass::Eval::operator()" in "eval.cpp". It will lead to a remote denial of service attack. This issue also affects all versions of other packages that use the LibSass library, such as node-sass, libsass-python, sassc, jsass.
CWE-674 - Uncontrolled Recursion
The product does not properly control the amount of recursion which takes place, consuming excessive resources, such as allocated memory or the program stack.