CVEvulnerability
CVE-2020-26976
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-01-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
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.
Affected configurations
• mozilla firefox (< 84.0)
• debian debian linux 9.0
• debian debian linux 10.0
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1674343 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00001.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00002.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202102-02 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4840 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4842 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-54/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1674343 Issue Tracking, Permissions Required, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00001.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00002.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202102-02 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4840 Third Party Advisory
- https://www.debian.org/security/2021/dsa-4842 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-54/ Vendor Advisory