CVE-2026-47874 Security Details

CVE ID

CVE-2026-47874

CWE

CWE-770

CVE Description

The vulnerability occurs when a client sends HTTP/1.1 pipelined requests over a single connection, causing the Reactor Netty HTTP server to consume an excessive amount of memory. 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

6.9Medium

CVSS Vector

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

EPSS Score

0.402%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

reactor/ipc/netty/http/server/HttpServerHandler.doPipeline(Lio/netty/channel/ChannelHandlerContext;Ljava/lang/Object;)V

JVMVulnerable params: 0, 1

reactor/netty/http/server/HttpTrafficHandler.doPipeline(Lio/netty/channel/ChannelHandlerContext;Ljava/lang/Object;)V

JVMVulnerable params: 0, 1

Affected Ecosystems

affected

Source

National Vulnerability Database

References

spring.ioPROJECT