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Medium · 6.1 CVE-2026-47848 EUVD-2026-66680GHSA-6p7h-426w-rcrx

Reactor Netty WebSocket Client Leaks Credentials On Redirect

Published Aug 26, 2026 · Updated Aug 26, 2026 · Assigned by vmware

Description

In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.
Reactor Netty 1.3.0 - 1.3.6
Reactor Netty 1.1.0 - 1.2.18
Reactor Netty 1.0.52 and earlier

Affected products

VendorProductAffectedFixed
Spring Reactor Netty 1.3.0 – ≤ 1.3.6, 1.1.0 – ≤ 1.2.18, ≤ 1.0.52 —

References