Description
Apostrophe Technologies sanitize-html before 2.3.1 does not properly handle internationalized domain name (IDN) which could allow an attacker to bypass hostname whitelist validation set by the "allowedIframeHostnames" option.
Remediation
References
https://advisory.checkmarx.net/advisory/CX-2021-4308
https://github.com/apostrophecms/sanitize-html/blob/main/CHANGELOG.md#231-2021-01-22
https://github.com/apostrophecms/sanitize-html/pull/458
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CVE-2021-21391 Vulnerability in npm package @ckeditor/ckeditor5-engine
CVE-2020-36282 Vulnerability in maven package com.rabbitmq.jms:rabbitmq-jms