CVE-2026-59898

7.5 Élevée

Publiée le 29/07/2026 à 21:16 · Modifiée le 06/08/2026 à 22:35 · Analysée par le NVD · Source : security-advisories@github.com

Description

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 (or V08) handshaker by sending `Sec-WebSocket-Version: 7` and omitting `Connection: Upgrade` / `Upgrade: websocket` headers, completing a protocol switch that a proxy would not recognize as an Upgrade request and enabling HTTP request smuggling / protocol-confusion attacks. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.

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Produits concernés

Scores CVSS

Version	Score	Source	Vecteur
4.0	6.3 Moyenne	security-advisories@github.com	`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`
3.1	7.5 Élevée	nvd@nist.gov (NVD)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`

Faiblesses (CWE)

CWE-444

Références

https://github.com/netty/netty/releases/tag/netty-4.1.136.Final Release Notes
https://github.com/netty/netty/releases/tag/netty-4.2.16.Final Release Notes
https://github.com/netty/netty/security/advisories/GHSA-4mp9-239f-g9hg Vendor Advisory

CVE-2026-59898

Description

Produits concernés

Scores CVSS

Faiblesses (CWE)

Références

Ailleurs