CVE-2026-47845

Reactor Netty HTTP Server may incorrectly evaluate proxy addresses

Published Aug 26, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol.
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 Broadcom
Broadcom reactor Netty
CPEs cpe:2.3:a:broadcom:reactor_netty:*:*:*:*:*:*:*:*
Vendors & Products Broadcom
Broadcom reactor Netty
Type Values Removed Values Added
Weaknesses CWE-285
CWE-640
Type Values Removed Values Added
Weaknesses CWE-290
Metrics ssvc

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

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-285
CWE-640
Type Values Removed Values Added
Description In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol. 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 may incorrectly evaluate proxy addresses
References
Metrics cvssV3_1

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Aug 27, 2026, 2:02 PM
Reserved
May 20, 2026, 10:00 AM
Status
Analyzed
Published
Aug 27, 2026, 1:17 AM
Modified
Sep 4, 2026, 7:06 PM