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CVE-2020-26976

CVE-2020-26976

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 1.6%
exploitation probability
1.6%top 25% of all CVEs
observed exploitation
nono source reports it
When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing. This vulnerability affects Firefox < 84.
Affected products
Mozilla · Firefox
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1674343https://lists.debian.org/debian-lts-announce/2021/02/msg00001.htmlhttps://lists.debian.org/debian-lts-announce/2021/02/msg00002.htmlhttps://security.gentoo.org/glsa/202102-02https://www.debian.org/security/2021/dsa-4840https://www.debian.org/security/2021/dsa-4842https://www.mozilla.org/security/advisories/mfsa2020-54/