CVE-2026-47874

Reactor Netty HTTP Server Denial of Service With Pipelined Requests

Published Aug 26, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Pivotal
Pivotal reactor Netty
CPEs cpe:2.3:a:pivotal:reactor_netty:*:*:*:*:*:*:*:*
Vendors & Products Pivotal
Pivotal reactor Netty
Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-770
Type Values Removed Values Added
First Time appeared Spring
Spring reactor Netty
Vendors & Products Spring
Spring reactor Netty
Type Values Removed Values Added
Weaknesses CWE-400
Type Values Removed Values Added
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
Title Reactor Netty HTTP Server Denial of Service With Pipelined Requests
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Aug 27, 2026, 1:12 PM
Reserved
May 20, 2026, 10:00 AM
Status
Analyzed
Published
Aug 27, 2026, 1:17 AM
Modified
Sep 2, 2026, 3:50 PM