Resource exhaustion in Reactor Netty - CVE-2026-47874
Published: August 28, 2026
Vulnerability identifier: #VU146291
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2026-47874
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled memory consumption in Reactor Netty HTTP server when processing HTTP/1.1 pipelined requests over a single connection. A remote attacker can send pipelined requests over a single connection to cause a denial of service.
Affected software
Reactor Netty
How to mitigate CVE-2026-47874
Install security update from vendor's website.
Reactor Netty - addressed in versions 1.0.53, 1.2.19, 1.3.6.1, 1.3.7