6.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
40.2%
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.
bugzilla.mozilla.org/show_bug.cgi?id=1636629
security.gentoo.org/glsa/202202-03
www.mozilla.org/security/advisories/mfsa2021-52/