What is CVE-2021-22916?

CVE-2021-22916 is a medium-severity vulnerability in Brave, classified under Information Disclosure. CVSS score: 5.9/10. Published 2021-07-12.

How severe is CVE-2021-22916?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2021-22916 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Brave

CVE-2021-22916

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.

Vulnerability class: Information Disclosure

EPSS: 0.021 (79.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Brave
N/a Https://github.com/brave/brave-core — versions Fixed in 1.26.60

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

neeythann/neeythann

References

support@hackerone.com (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-22916?: CVE-2021-22916 is a medium-severity vulnerability in Brave, classified under Information Disclosure. CVSS score: 5.9/10. Published 2021-07-12.
How severe is CVE-2021-22916?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2021-22916 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.