CVE-2021-22916

{"containers": {"cna": {"affected": [{"product": "https://github.com/brave/brave-core", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in 1.26.60"}]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "description": "Information Disclosure (CWE-200)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-07-12T10:22:31.000Z", "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://hackerone.com/reports/1203842"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "support@hackerone.com", "ID": "CVE-2021-22916", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "https://github.com/brave/brave-core", "version": {"version_data": [{"version_value": "Fixed in 1.26.60"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Information Disclosure (CWE-200)"}]}]}, "references": {"reference_data": [{"name": "https://hackerone.com/reports/1203842", "refsource": "MISC", "url": "https://hackerone.com/reports/1203842"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:58:25.496Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hackerone.com/reports/1203842"}]}]}, "cveMetadata": {"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "assignerShortName": "hackerone", "cveId": "CVE-2021-22916", "datePublished": "2021-07-12T10:22:31.000Z", "dateReserved": "2021-01-06T00:00:00.000Z", "dateUpdated": "2024-08-03T18:58:25.496Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "https://github.com/brave/brave-core", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in 1.26.60"}]}], "source": "support@hackerone.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:brave:brave:*:*:*:*:*:*:*:*", "matchCriteriaId": "41D08F5F-EEE8-43E8-AA87-EF489B9DFD54", "versionEndIncluding": "1.26.60", "versionStartIncluding": "1.17.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "En Brave Desktop entre las versiones 1.17 y 1.26.60, cuando el adblocking est\u00e1 habilitado y una extensi\u00f3n de navegador proxy est\u00e1 instalada, la funcionalidad CNAME adblocking emite peticiones DNS que usaban la configuraci\u00f3n DNS del sistema en lugar de la configuraci\u00f3n proxy de la extensi\u00f3n, resultando en una posible divulgaci\u00f3n de informaci\u00f3n"}], "id": "CVE-2021-22916", "lastModified": "2026-06-17T03:38:01.033", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-12T11:15:07.770", "references": [{"source": "support@hackerone.com", "tags": ["Third Party Advisory"], "url": "https://hackerone.com/reports/1203842"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://hackerone.com/reports/1203842"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "support@hackerone.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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