vulnerability
MFSA2020-54 Firefox: Security Vulnerabilities fixed in Firefox 84 (CVE-2020-26976)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Dec 15, 2020 | Dec 16, 2020 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Dec 15, 2020
Added
Dec 16, 2020
Modified
Mar 27, 2026
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.
Solution
mozilla-firefox-upgrade-84_0
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