CVE-2020-26976
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-26976
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26976.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-26976
- Downstream
- Related
- Published
- 2021-01-07T14:15:12Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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/