CVE-2021-23972

high
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
8.0

Description

One phishing tactic on the web is to provide a link with HTTP Auth. For example 'https://www.phishingtarget.com@evil.com'. To mitigate this type of attack, Firefox will display a warning dialog; however, this warning dialog would not have been displayed if evil.com used a redirect that was cached by the browser. This vulnerability affects Firefox < 86.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-23972

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-23972.html

OS impact

OSVersionStatusFixed in
arch archfixed86.0-1
suse slesaffected
debian debiansidfixed86.0-1

References

Verify integrity in audit chain (admin only). AS-IS.