CVE-2026-47874

Reactor Netty HTTP Server Denial of Service With Pipelined Requests

State: Published
Severity: 5.3 Medium
Published: Aug 26, 2026
Updated: Aug 27, 2026
Reserved: May 20, 2026

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

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	vmware

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
Reactor NettySpring	1.3.0 through 1.3.6Affected 1.1.0 through 1.2.18Affected 1.0.52 and earlierAffected

References

https://spring.io/security/cve-2026-47874

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