Cross-site Scripting (XSS) Affecting firefox-esr package, versions <78.5.0esr-1~deb10u1
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Test your applications- Snyk ID SNYK-DEBIAN10-FIREFOXESR-1041099
- published 18 Nov 2020
- disclosed 9 Dec 2020
Introduced: 18 Nov 2020
CVE-2020-26958 Open this link in a new tabHow to fix?
Upgrade Debian:10
firefox-esr
to version 78.5.0esr-1~deb10u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox-esr
package and not the firefox-esr
package as distributed by Debian
.
See How to fix?
for Debian:10
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.