CVE-2020-26976

Description

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.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1674343

https://lists.debian.org/debian-lts-announce/2021/02/msg00001.html

https://lists.debian.org/debian-lts-announce/2021/02/msg00002.html

https://security.gentoo.org/glsa/202102-02

https://www.debian.org/security/2021/dsa-4840

https://www.debian.org/security/2021/dsa-4842

https://www.mozilla.org/security/advisories/mfsa2020-54/

Details

Risk Information

CVSS v2

CVSS v3