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 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. This vulnerability affects Firefox < 66.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2019-04-26T16:13:22

Updated: 2024-08-04T22:01:54.714Z

Reserved: 2019-03-14T00:00:00

Link: CVE-2019-9803

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2019-04-26T17:29:03.257

Modified: 2019-04-30T23:51:48.940

Link: CVE-2019-9803

cve-icon Redhat

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