Medium severity · published Jul 12, 2021
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…
5.9
CVSS
3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.0% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BR
Brave · Brave
1.17.0 through 1.26.60 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22916
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22916
Third Party Advisory
https://hackerone.com/reports/1203842
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