{"id":"CVE-2021-22916","aliases":["EUVD-2021-10045","GHSA-x7j4-9cp2-wmh8"],"status":"published","title":"In Brave Desktop between versions 1.17 and 1.26.60, when adblocking is enabled and a proxy...","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.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02993,"percentile":0.87509,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2021-07-12T10:22:31Z","modified":"2026-10-24T10:30:26Z","products":[{"vendor":"brave","product":"brave"}],"references":[{"url":"https://hackerone.com/reports/1203842","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22916"},{"url":"https://github.com/advisories/GHSA-x7j4-9cp2-wmh8"}],"sources":{"cve":[{"id":"CVE-2021-22916","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.","status":"published","published":"2021-07-12T10:22:31Z","modified":"2024-08-03T18:58:25.496Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:32:57.701381Z"}],"euvd":[{"id":"EUVD-2021-10045","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.","status":"published","published":"2021-07-12T10:22:31Z","modified":"2024-08-03T18:58:25Z","updated_at":"2026-11-03T03:25:01.154097Z"}],"ghsa":[{"id":"GHSA-x7j4-9cp2-wmh8","title":"In Brave Desktop between versions 1.17 and 1.26.60, when adblocking is enabled and a proxy...","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.","status":"published","published":"2022-05-24T19:07:32Z","modified":"2023-01-28T05:01:52Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:43:39.813289Z"}],"nvd":[{"id":"CVE-2021-22916","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.","status":"published","published":"2021-07-12T11:15:07.77Z","modified":"2026-06-17T03:38:01.033Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-22916","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.","status":"published","published":"2021-07-12T11:15:07.77Z","modified":"2026-10-24T10:30:26.210329488Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.367807Z"}]}}