Out-of-Bounds Affecting node-sass package, versions *



    Attack Complexity Low
    User Interaction Required
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.25% (65th percentile)
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6.5 medium

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  • Snyk ID SNYK-JS-NODESASS-535498
  • published 25 Nov 2019
  • disclosed 14 Jan 2019
  • credit Unknown

How to fix?

There is no fixed version for node-sass.


node-sass is a Node.js bindings package for libsass.

Affected versions of this package are vulnerable to Out-of-Bounds. A heap-based buffer over-read exists in Sass::Prelexer::parenthese_scope in prelexer.hpp. node-sass is affected by this vulnerability due to its bundled usage of libsass.