CVE-2021-43540: vulnerability in Mozilla Firefox
Published · Updated
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3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.9%
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.
Affected products
Mozilla · FirefoxRelated CVEs — Mozilla Firefox
In the same product, most dangerous first.