CVE-2020-26976

medium

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

Advisories
More

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

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

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

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

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

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

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

Details

Source: Mitre, NVD

Published: 2021-01-07

Updated: 2021-02-15

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Severity: Medium

EPSS

EPSS: 0.00569