Cross-site Scripting (XSS) Affecting thunderbird package, versions <1:78.5.0-1
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Test your applications- Snyk ID SNYK-DEBIAN12-THUNDERBIRD-1561390
- published 18 Nov 2020
- disclosed 9 Dec 2020
Introduced: 18 Nov 2020
CVE-2020-26951 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.
A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.