What is CVE-2026-47874?

CVE-2026-47874 is a medium-severity vulnerability in Spring Reactor Netty, classified under CWE-770 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING. CVSS score: 5.3/10. Published 2026-08-27.

How severe is CVE-2026-47874?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Spring Reactor Netty

CVE-2026-47874

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

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Spring Reactor Netty

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47874?: CVE-2026-47874 is a medium-severity vulnerability in Spring Reactor Netty, classified under CWE-770 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING. CVSS score: 5.3/10. Published 2026-08-27.
How severe is CVE-2026-47874?: Medium severity. CVSS v3 base score is 5.3 out of 10.