CVE-2026-47845 Security Details

CVE ID

CVE-2026-47845

CWE

CWE-290

CVE Description

In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

Published

Aug 21, 2026

CVSS Score & Severity

6.3Medium

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.294%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

reactor/netty/http/server/HAProxyMessageReader.resolveRemoteAddressFromProxyProtocol(Lio/netty/channel/Channel;)Ljava/net/SocketAddress;

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

spring.ioPROJECT