vulnerability
Arch Linux: Access restriction bypass (CVE-2019-9803)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Apr 26, 2019 | Jul 11, 2025 | Nov 27, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Apr 26, 2019
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Security Policy (CSP), navigation to a same-origin URL must be upgraded to HTTPS. Firefox before 66.0 will incorrectly navigate to an HTTP URL rather than perform the security upgrade requested by the CSP in some circumstances, allowing for potential man-in-the-middle attacks on the linked resources.
Solution
arch-linux-upgrade-latest
References
- CVE-2019-9803
- https://attackerkb.com/topics/CVE-2019-9803
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1437009
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1515863
- URL-https://security.archlinux.org/ASA-201903-11
- URL-https://w3c.github.io/webappsec-upgrade-insecure-requests/
- URL-https://www.mozilla.org/en-US/security/advisories/mfsa2019-07/
- URL-https://www.mozilla.org/security/advisories/mfsa2019-07/
- CWE-346
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