{"id":"CVE-2026-64785","details":"SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. This vulnerability is addressed in swift-nio-http2 version 1.45.0.","aliases":["GHSA-q3g2-m552-3r9c"],"modified":"2026-09-03T08:05:05.331371Z","published":"2026-07-23T20:17:21.440Z","references":[{"type":"FIX","url":"https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apple/swift-nio-http2","events":[{"introduced":"0"},{"fixed":"45bdf670248be5f16ec0340e125dca285536f0fb"}],"database_specific":{"cpe":"cpe:2.3:a:apple:swiftnio_http\\/2:*:*:*:*:*:swift:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.45.0"}],"source":"CPE_RANGE"}}],"versions":["1.44.0","1.43.0","1.42.0","1.41.0","1.40.0","1.39.1","1.39.0","1.38.0","1.37.0","1.36.0","1.35.0","1.34.1","1.34.0","1.33.0","1.32.0","1.31.0","1.30.0","1.29.0","1.28.1","1.28.0","1.27.0","1.26.0","1.25.2","1.25.1","1.25.0","1.24.1","1.24.0","1.23.1","1.23.0","1.22.1","1.22.0","1.21.0","1.20.1","1.20.0","1.19.2","1.19.1","1.19.0","1.18.5","1.18.4","1.18.3","1.18.2","1.18.1","1.18.0","1.17.0","1.16.3","1.16.2","1.16.1","1.16.0","1.15.0","1.14.2","1.14.1","1.14.0","1.13.0","1.12.3","1.12.2","1.12.1","1.12.0","1.11.0","1.10.0","1.9.1","1.9.0","1.8.0","1.7.2","1.7.1","1.7.0","1.6.1","1.6.0","1.5.0","1.4.0","1.3.0","1.2.1","1.2.0","1.1.0","1.0.1","1.0.0","1.0.0-convergence.2","1.0.0-convergence.1","0.2.0","0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64785.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}