vulnerability

Alpine Linux: CVE-2021-43540: Vulnerability in Multiple Components

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Severity

CVSS

(AV:N/AC:M/Au:N/C:N/I:P/A:N)

Published

Dec 8, 2021

Added

Aug 22, 2024

Modified

Jun 18, 2026

Description

WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension. This vulnerability affects Firefox < 95.

Solutions

alpine-linux-upgrade-firefoxalpine-linux-upgrade-librewolf

References

CVE-2021-43540
https://attackerkb.com/topics/CVE-2021-43540
https://security.alpinelinux.org/vuln/CVE-2021-43540
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-30469
EUVD-EUVD-2021-30469

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