CVE-2021-23971 describes a vulnerability in Firefox versions prior to 86 where a conflicting Referrer-Policy during a redirect could lead to the browser adopting the redirect's policy, potentially exposing more information than intended to the destination. This medium-severity vulnerability (CVSS 6.5) requires user interaction (UI:R) and could result in high confidentiality impact (C:H) without affecting integrity or availability. While there is no known active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 86.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.