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CVE-2026-50009

4.8 MEDIUM

Netty is a network application framework for development of protocol servers and clients

Published: 2026-06-12 · Last updated: 2026-06-15

Severity and scoring

CVSS
4.8 MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE
CWE-200, CWE-330

Affected products

VendorProduct
nettynetty

Description

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, Netty QUIC exposes the stateless reset token on the network path when using the default HMAC-based connection-ID and stateless-reset-token generators. The reset token for the server's current source connection ID can be derived from bytes that appear as the connection ID in QUIC headers after a source-CID rotation. An on-path attacker observing the headers can use the token to perform a Denial of Service by sending a spoofed Stateless Reset packet. Version 4.2.15.Final patches the issue.

Source: NVD

References

Related CVEs

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  • CVE-2026-50560 — Netty is a network application framework for development of protocol servers and clients (5.3 MEDIUM)
  • CVE-2026-50020 — Netty is a network application framework for development of protocol servers and clients (5.3 MEDIUM)
  • CVE-2026-50011 — Netty is a network application framework for development of protocol servers and clients (7.5 HIGH)
  • CVE-2026-50010 — Netty is a network application framework for development of protocol servers and clients (7.5 HIGH)
  • CVE-2026-48748 — Netty is a network application framework for development of protocol servers and clients (7.5 HIGH)

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