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Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package thunderbird Open this link in a new tab

    Threat Intelligence

    EPSS 0.57% (78th percentile)
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NVD
6.1 medium
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Red Hat
6.1 medium
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SUSE
6.1 medium

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  • Snyk ID SNYK-UBUNTU1604-THUNDERBIRD-1013295
  • published 26 Sep 2020
  • disclosed 1 Oct 2020
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Introduced: 26 Sep 2020

CVE-2020-15676 Open this link in a new tab
CWE-79 Open this link in a new tab

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu.

Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.