CVE-2019-9803

State: Published
Severity: Not scored
Published: Apr 26, 2019
Updated: Aug 4, 2024
Reserved: Mar 14, 2019

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 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
FirefoxMozilla	before 66Affected

References

https://www.mozilla.org/security/advisories/mfsa2019-07/
https://bugzilla.mozilla.org/show_bug.cgi?id=1515863
https://bugzilla.mozilla.org/show_bug.cgi?id=1437009
https://w3c.github.io/webappsec-upgrade-insecure-requests/

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