Potentially Serious Vulnerability Found in Popular WYSIWYG Editor TinyMCE

guest · Aug 13, 2020

Potentially Serious Vulnerability Found in Popular WYSIWYG Editor TinyMCE
August 13, 2020
https://www.securityweek.com/potentially-serious-vulnerability-found-popular-wysiwyg-editor-tinymce

Developed by Tiny Technologies, TinyMCE is advertised as the most advanced WYSIWYG HTML editor designed to simplify website content creation. According to Tiny, the editor has been downloaded 350 million times per year and it’s included in more than 100 million websites.

Researchers at Bishop Fox discovered in April that TinyMCE is affected by an XSS vulnerability whose impact depends on the application using the editor. The issue, tracked as CVE-2020-12648, impacts version 5.2.1 and earlier, and it was patched in July with the release of versions 4.9.11 and 5.4.1.
Successful exploitation can allow an attacker to escalate privileges, obtain information, and even hijack the targeted user’s account.
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“Depending on the site in which tinyMCE is used, an attacker could exploit this as either stored or reflected (using a crafted link) XSS. I have seen both cases,” George Seketee, senior security consultant at Bishop Fox and one of the people credited for finding the flaw, told SecurityWeek.
Dylan Just, information security lead at Tiny, said that in addition to patching the flaw in TinyMCE versions 5.4.1 and 4.9.11, they have identified workarounds, which are described in the company’s own advisory.
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Potentially Serious Vulnerability Found in Popular WYSIWYG Editor TinyMCE

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