vulnerability
Arch Linux: Access restriction bypass (CVE-2020-26958)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Dec 9, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Dec 9, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
Firefox before 83.0 did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-26958
- https://attackerkb.com/topics/CVE-2020-26958
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1669355
- URL-https://security.archlinux.org/ASA-202011-12
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-50/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-51/
- URL-https://www.mozilla.org/security/advisories/mfsa2020-52/
- CWE-79
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