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NVD Vulnerability Details :

CVE-2026-64785

Awaiting Analysis

Source-product-security@apple.com

Published At-23 Jul, 2026 | 20:17

Updated At-24 Jul, 2026 | 21:16

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
			N/A

Type: Secondary

Version: 3.1

Base score: 5.3

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

Weaknesses

CWE ID	Type	Source
CWE-444	Secondary	134c704f-9b21-4f2e-91b3-4a467353bcc0

CWE ID: CWE-444

Type: Secondary

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

References

Hyperlink	Source	Resource
https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c	product-security@apple.com	N/A

Hyperlink: https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c

Source: product-security@apple.com

Resource: N/A

CISA Catalog

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Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

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Change History