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VMwareCVE-2026-47845

VMware Reactor Netty: authentication bypass by spoofing

Medium5.3CVE-2026-47845 · Published Aug 27, 2026 · updated Sep 4, 2026

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

VMware advisory

Affected versions

PackageAffectedFixed in
Reactor Netty
Product
>= 1.3.0, <= 1.3.6No fix yet
>= 1.1.0, <= 1.2.18No fix yet
<= 1.0.52No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-290

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