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Access Restriction Bypass Affecting sanitize-html Open this link in a new tab package, versions <2.3.1

0.0
medium

  • Attack Complexity

    Low

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  • snyk-id

    SNYK-JS-SANITIZEHTML-1070786

  • published

    9 Feb 2021

  • disclosed

    9 Feb 2021

  • credit

    Ron Masas, Checkmarx

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Introduced: 9 Feb 2021

CVE-2021-26539 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade sanitize-html to version 2.3.1 or higher.

Overview

sanitize-html is a library that allows you to clean up user-submitted HTML, preserving whitelisted elements and whitelisted attributes on a per-element basis

Affected versions of this package are vulnerable to Access Restriction Bypass. Internationalized domain name (IDN) is not properly handled. This allows attackers to bypass hostname whitelist validation set by the allowedIframeHostnames option.

References