CVE-2022-30334

Name: CVE-2022-30334
Creator: NVD / NIST
Published: 2022-05-07T05:15:06.913+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 2.18%

Last modified Jun 17, 2026

CVE-2022-30334 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Brave before 1.34, when a Private Window with Tor Connectivity is used, leaks .onion URLs in Referer and Origin headers. NOTE: although this was fixed by Brave, the Brave documentation still advises "Note that Private Windows with Tor Connectivity in Brave are just regular private windows that use Tor as a proxy. EPSS estimates a 2.18% chance of exploitation in the next 30 days.

Description

Brave before 1.34, when a Private Window with Tor Connectivity is used, leaks .onion URLs in Referer and Origin headers. NOTE: although this was fixed by Brave, the Brave documentation still advises "Note that Private Windows with Tor Connectivity in Brave are just regular private windows that use Tor as a proxy. Brave does NOT implement most of the privacy protections from Tor Browser."

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

2.18%

80.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Brave	Brave	< 1.34

References

https://github.com/brave/brave-browser/issues/18071Issue Tracking, Third Party Advisory
https://github.com/brave/brave-core/pull/10760Exploit, Patch, Third Party Advisory
https://hackerone.com/reports/1337624Exploit, Third Party Advisory
https://support.brave.com/hc/en-us/articles/360018121491-What-is-a-Private-Window-with-Tor-Connectivity-Vendor Advisory
https://github.com/brave/brave-browser/issues/18071Issue Tracking, Third Party Advisory
https://github.com/brave/brave-core/pull/10760Exploit, Patch, Third Party Advisory
https://hackerone.com/reports/1337624Exploit, Third Party Advisory
https://support.brave.com/hc/en-us/articles/360018121491-What-is-a-Private-Window-with-Tor-Connectivity-Vendor Advisory

Timeline

Published: May 7, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-30334?

How severe is CVE-2022-30334?

CVE-2022-30334 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.18% probability of exploitation in the next 30 days.

How do I fix CVE-2022-30334?

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-2022-30334?

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

Scan your code now

Source: NVD / NIST