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postcss-selector-parser@6.1.5

Selector parser with built in methods for working with selector strings.

  • latest version

    7.1.7

  • latest non vulnerable version

    7.1.7

  • first published

    11 years ago

  • latest version published

    8 hours ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the postcss-selector-parser package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • H
    Inefficient Algorithmic Complexity

    Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity via the uniqs helper and index-membership checks in src/parser.js when parsing flat selectors (e.g. .a.a.a...) containing a large number of class or ID tokens. The original implementation uses Array.indexOf inside a filter callback and repeated linear scans of the hasClass/hasId arrays, producing quadratic time complexity proportional to the number of tokens. An attacker who can supply selector input to the parser can trigger CPU exhaustion by providing a long flat selector, pinning a CPU core and causing the process to become unresponsive.

    How to fix Inefficient Algorithmic Complexity?

    Upgrade postcss-selector-parser to version 7.1.6 or higher.

    <7.1.6
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