CVE-2026-64785

None

Open

TLP:CLEAR

NVD CVE.org

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Description

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.

Details

EPSS Score ⓘ: 0.18%

7.9th percentile
Confidence: 90%
Published: Jul 23, 2026
Last Modified: Jul 24, 2026

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