What is CVE-2021-22929?

CVE-2021-22929 is a medium-severity vulnerability in Brave, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.1/10. Published 2021-08-31.

How severe is CVE-2021-22929?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Information disclosure in Brave

CVE-2021-22929

An information disclosure exists in Brave Browser Desktop prior to version 1.28.62, where logged warning messages that included timestamps of connections to V2 onion domains in tor.log.

Published 2021-08-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (43.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.001

Affected products

Brave
Https://github.com/brave/brave-Core — versions 1.28.62

Weakness classification (CWE)

References

hackerone.com/reports/1249056 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-22929?: CVE-2021-22929 is a medium-severity vulnerability in Brave, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.1/10. Published 2021-08-31.
How severe is CVE-2021-22929?: Medium severity. CVSS v3 base score is 6.1 out of 10.