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PUBLISHED

2026-07-23 20:17

MODIFIED

2026-07-23 20:17

EPSS (Prob. Exploit)

0.29%

Top 78.5%

DATA SOURCES:

NVD 🔗 2026-07-23 FIRST EPSS 🔗 2026-11-01 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-02

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> GITHUB SECURITY ADVISORY

GHSA-q3g2-m552-3r9c MODERATE

swift-nio-http2: Missing CR/LF/NUL validation in header values

AFFECTED PACKAGES:

SWIFT / swift-nio-http2

< 1.45.0

Fixed in: 1.45.0

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

AFFECTED PACKAGES:

Unknown / Unknown

79 versions affected

ALIASES:

GHSA-q3g2-m552-3r9c

> HISTORIQUE DES MODIFICATIONS

Première apparition

23/07/2026 20:17

Source: NVD

Total des modifications: 0 Dernière mise à jour: 3 months ago

> REFERENCES

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