CVE-2026-47848

MediumCVSS 6.1/10Last modified Sep 4, 2026

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

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-601

Affected software

Vendor	Product	Versions
Spring	Reactor Netty	>= 1.3.0, <= 1.3.6; >= 1.1.0, <= 1.2.18; <= 1.0.52

References

https://spring.io/security/cve-2026-47848Vendor Advisory

Timeline

Published: Aug 26, 2026
Last modified: Sep 4, 2026
NVD status: Analyzed

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