CVE-2021-45884 is an information disclosure vulnerability affecting Brave Desktop versions 1.17 through 1.33 before 1.33.106, specifically when CNAME-based adblocking and a SOCKS-fallback proxying extension are active. This flaw causes additional DNS requests to bypass the proxy and use system DNS settings, potentially revealing user information. Rated 7.5 HIGH on CVSS, the vulnerability has a low attack complexity and can lead to high confidentiality impact without requiring user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.17.1, <= 1.33.106CPE matchmatch criteria | cpe:2.3:a:brave:brave:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.