Published: 08/12/2021 Updated: 12/07/2022

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 6.5 | Impact Score: 3.6 | Exploitability Score: 2.8

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

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.

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mozilla firefox

Mozilla Foundation Security Advisory 2021-52 Security Vulnerabilities fixed in Firefox 95 Announced December 7, 2021 Impact high Products Firefox Fixed in Firefox 95 ...

A security issue has been found in Firefox before version 95 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 ...

NVD-CWE-noinfo https://www.mozilla.org/security/advisories/mfsa2021-52/https://bugzilla.mozilla.org/show_bug.cgi?id=1636629 https://security.gentoo.org/glsa/202202-03 https://nvd.nist.gov https://www.mozilla.org/en-US/security/advisories/mfsa2021-52/https://security.archlinux.org/CVE-2021-43540

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CVE-2021-43540

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