{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32239", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-11T14:47:05.684Z", "datePublished": "2026-03-12T19:33:25.052Z", "dateUpdated": "2026-03-12T19:33:25.052Z"}, "containers": {"cna": {"title": "Cap'n Proto has an integer overflow in KJ-HTTP", "problemTypes": [{"descriptions": [{"cweId": "CWE-444", "lang": "en", "description": "CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-190", "lang": "en", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/capnproto/capnproto/security/advisories/GHSA-qjx3-pp3m-9jpm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/capnproto/capnproto/security/advisories/GHSA-qjx3-pp3m-9jpm"}, {"name": "https://github.com/capnproto/capnproto/commit/2744b3c012b4aa3c31cefb61ec656829fa5c0e36", "tags": ["x_refsource_MISC"], "url": "https://github.com/capnproto/capnproto/commit/2744b3c012b4aa3c31cefb61ec656829fa5c0e36"}, {"name": "https://github.com/capnproto/capnproto/commit/e929f0ba7901a6b8f4b5ba9a4db00af43288cbb0", "tags": ["x_refsource_MISC"], "url": "https://github.com/capnproto/capnproto/commit/e929f0ba7901a6b8f4b5ba9a4db00af43288cbb0"}, {"name": "https://capnproto.org/capnproto-c++-1.4.0.tar.gz", "tags": ["x_refsource_MISC"], "url": "https://capnproto.org/capnproto-c++-1.4.0.tar.gz"}, {"name": "https://capnproto.org/capnproto-c++-win32-1.4.0.zip", "tags": ["x_refsource_MISC"], "url": "https://capnproto.org/capnproto-c++-win32-1.4.0.zip"}], "affected": [{"vendor": "capnproto", "product": "capnproto", "versions": [{"version": "< 1.4.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-12T19:33:25.052Z"}, "descriptions": [{"lang": "en", "value": "Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, a negative Content-Length value was converted to unsigned, treating it as an impossibly large length instead. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0."}], "source": {"advisory": "GHSA-qjx3-pp3m-9jpm", "discovery": "UNKNOWN"}}}}

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