CVE-2020-26973 The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


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EPSS
0.14% (36th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-1051920
  • published16 Dec 2020
  • disclosed7 Jan 2021

Introduced: 16 Dec 2020

CVE-2020-26973  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.

NVD Description

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

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.