{"api_version":"1","generated_at":"2026-07-23T13:01:32+00:00","cve":"CVE-2023-43644","urls":{"html":"https://cve.report/CVE-2023-43644","api":"https://cve.report/api/cve/CVE-2023-43644.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-43644","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-43644"},"summary":{"title":"CVE-2023-43644","description":"Sing-box is an open source proxy system. Affected versions are subject to an authentication bypass when specially crafted requests are sent to sing-box. This affects all SOCKS5 inbounds with user authentication and an attacker may be able to bypass authentication. Users are advised to update to sing-box 1.4.4 or to 1.5.0-rc.4. 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Affected versions are subject to an authentication bypass when specially crafted requests are sent to sing-box. This affects all SOCKS5 inbounds with user authentication and an attacker may be able to bypass authentication. Users are advised to update to sing-box 1.4.4 or to 1.5.0-rc.4. Users unable to update should not expose the SOCKS5 inbound to insecure environments."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-306: Missing Authentication for Critical Function","cweId":"CWE-306"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"SagerNet","product":{"product_data":[{"product_name":"sing-box","version":{"version_data":[{"version_affected":"=","version_value":"< 1.4.5"},{"version_affected":"=","version_value":">= 1.5.0-beta.1, < 1.5.0-rc.4"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g","refsource":"MISC","name":"https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g"}]},"source":{"advisory":"GHSA-r5hm-mp3j-285g","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}]}},"nvd":{"publishedDate":"2023-09-25 20:15:00","lastModifiedDate":"2023-09-26 15:45:00","problem_types":["CWE-306"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:*:*:*:*:*:*:*:*","versionEndExcluding":"1.4.5","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta4:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta5:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta6:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta7:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta8:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta9:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta10:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta11:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta12:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:rc1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:rc2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:rc3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:sagernet:sing-box:1.5.0:beta1:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}