Cross-site Scripting (XSS) Affecting thunderbird package, versions <1:78.5.0-1
Threat Intelligence
EPSS
0.1% (42nd
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN12-THUNDERBIRD-1561198
- published 18 Nov 2020
- disclosed 9 Dec 2020
Introduced: 18 Nov 2020
CVE-2020-26956 Open this link in a new tabHow to fix?
Upgrade Debian:12 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:12 relevant fixed versions and status.
In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
CVSS Scores
version 3.1