{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47737", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-19T22:16:39.503Z", "datePublished": "2026-07-14T19:45:16.648Z", "dateUpdated": "2026-07-14T19:45:16.648Z"}, "containers": {"cna": {"title": "Puma PROXY Protocol v1 Accepts Repeated Protocol Headers on Persistent Connections", "problemTypes": [{"descriptions": [{"cweId": "CWE-290", "lang": "en", "description": "CWE-290: Authentication Bypass by Spoofing", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/puma/puma/security/advisories/GHSA-2vqw-3mp8-cgmx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/puma/puma/security/advisories/GHSA-2vqw-3mp8-cgmx"}, {"name": "https://github.com/puma/puma/pull/3944", "tags": ["x_refsource_MISC"], "url": "https://github.com/puma/puma/pull/3944"}, {"name": "https://github.com/puma/puma/pull/3947", "tags": ["x_refsource_MISC"], "url": "https://github.com/puma/puma/pull/3947"}, {"name": "https://github.com/puma/puma/commit/439c6136d9c2275721b7864db3ee78af7c80889f", "tags": ["x_refsource_MISC"], "url": "https://github.com/puma/puma/commit/439c6136d9c2275721b7864db3ee78af7c80889f"}, {"name": "https://github.com/puma/puma/commit/ebe9db3929ab8299d19c8f5b41e8ef4f4b22fa58", "tags": ["x_refsource_MISC"], "url": "https://github.com/puma/puma/commit/ebe9db3929ab8299d19c8f5b41e8ef4f4b22fa58"}, {"name": "https://github.com/puma/puma/releases/tag/v7.2.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/puma/puma/releases/tag/v7.2.1"}, {"name": "https://github.com/puma/puma/releases/tag/v8.0.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/puma/puma/releases/tag/v8.0.2"}], "affected": [{"vendor": "puma", "product": "puma", "versions": [{"version": ">= 5.5.0, < 7.2.1", "status": "affected"}, {"version": ">= 8.0.0, < 8.0.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-14T19:45:16.648Z"}, "descriptions": [{"lang": "en", "value": "Puma is a Ruby/Rack web server built for parallelism. From 5.5.0 until 7.2.1 and 8.0.2, Puma is vulnerable to source IP spoofing when set_remote_address proxy_protocol: :v1 is enabled and persistent connections are used because Puma incorrectly re-parses PROXY protocol headers after each keep-alive request on the same connection, allowing an attacker to inject a second PROXY header and overwrite REMOTE_ADDR. This issue is fixed in versions 7.2.1 and 8.0.2."}], "source": {"advisory": "GHSA-2vqw-3mp8-cgmx", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{}