Homepage
About Snyk

Cross-site Scripting (XSS) Affecting thunderbird package, versions <1:78.5.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Scope Changed

    Threat Intelligence

    EPSS 0.13% (49th percentile)
Expand this section
NVD
6.1 medium
Expand this section
Red Hat
6.1 medium
Expand this section
SUSE
6.1 medium

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DEBIAN11-THUNDERBIRD-1041153
  • published 18 Nov 2020
  • disclosed 9 Dec 2020
Report a new vulnerability Found a mistake?

Introduced: 18 Nov 2020

CVE-2020-26958 Open this link in a new tab
CWE-79 Open this link in a new tab

How to fix?

Upgrade Debian:11 thunderbird to version 1:78.5.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.