Vulnerability · Published Jul 12, 2021 · Assigned by hackerone

CVE-2021-22916

Medium 5.9

In plain English

A medium-severity information exposure in https://github.com/brave/brave-core. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.0% (higher than 87% of all known vulnerabilities).

Severity (CVSS NVD)5.9Medium

Exploit odds (30 days)3.0%top 12.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

In Brave Desktop between versions 1.17 and 1.26.60, when adblocking is enabled and a proxy browser extension is installed, the CNAME adblocking feature issues DNS requests that used the system DNS settings instead of the extension's proxy settings, resulting in possible information disclosure.

Affected products (as reported)

Vendor	Product	Versions
n/a	https://github.com/brave/brave-core	Fixed in 1.26.60

Weakness: CWE-200

References

https://hackerone.com/reports/1203842 x_refsource_MISC