CVE-2021-22917
CVE-2021-22917 is a medium-severity vulnerability in Brave Browser with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (65th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-200
- Affected product: Brave Browser
- Published:
- Last modified:
Description
Brave Browser Desktop between versions 1.17 and 1.20 is vulnerable to information disclosure by way of DNS requests in Tor windows not flowing through Tor if adblocking was enabled.
Frequently asked questions
- What is CVE-2021-22917?
- Brave Browser Desktop between versions 1.17 and 1.20 is vulnerable to information disclosure by way of DNS requests in Tor windows not flowing through Tor if adblocking was enabled.
- How severe is CVE-2021-22917?
- CVE-2021-22917 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2021-22917 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-22917?
- CVE-2021-22917 affects Brave Browser. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-22917?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-22917 published?
- CVE-2021-22917 was published on 2021-07-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:brave:browser:*:*:*:*:*:*:*:*
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