Strix
26.1K

CVE-2021-22916

MEDIUMCVSS 5.9/10EPSS 1.83%

Last modified

CVE-2021-22916 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 1.83% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
1.83%

76.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
BraveBrave>= 1.17.0, <= 1.26.60

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2021-22916?
CVE-2021-22916 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.83% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22916?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22916?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST