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CVE-2026-47843

Reactor Netty may incorrectly route traffic due to DNS resolver reuse

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Vendors
Broadcom Spring
Products
Reactor Netty Reactor Netty
CVE-2026-47848

Reactor Netty WebSocket Client Leaks Credentials On Redirect

In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Broadcom Spring
Products
Reactor Netty Reactor Netty
CVE-2026-47844

Reactor Netty HTTP Server Leaks Exception Details

In specific scenarios, the Reactor Netty HTTP Server may leak exception details across unrelated requests. In order for this to happen, the server must be configured with Brave Tracing. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Broadcom Spring
Products
Reactor Netty Reactor Netty
CVE-2026-47845

Reactor Netty HTTP Server may incorrectly evaluate proxy addresses

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

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Broadcom Spring
Products
Reactor Netty Reactor Netty
CVE-2023-34054

Reactor Netty HTTP Server Metrics DoS Vulnerability

In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition. Specifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Broadcom
Products
Reactor Netty
CVE-2019-11284

Reactor Netty authentication leak in redirects

Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through redirects, including authorization ones. A remote unauthenticated malicious user may gain access to credentials for a different server than they have access to.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Broadcom
Products
Reactor Netty
CVE-2023-34062

reactor-netty-http: directory traversal vulnerability

In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack. Specifically, an application is vulnerable if Reactor Netty HTTP Server is configured to serve static resources.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
Vendors
Broadcom
Products
Reactor Netty
CVE-2020-5403

DoS Via Malformed URL with Reactor Netty HTTP Server

Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.

CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
Vendors
Broadcom
Products
Reactor Netty
CVE-2020-5404

Authentication Leak On Redirect With Reactor Netty HttpClient

The HttpClient from Reactor Netty, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be used incorrectly, leading to a credentials leak during a redirect to a different domain. In order for this to happen, the HttpClient must have been explicitly configured to follow redirects.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Broadcom Redhat
Products
Reactor Netty Openshift Application Runtimes
CVE-2022-31684

reactor-netty-http: Log request headers in some cases of invalid HTTP requests

Reactor Netty HTTP Server, in versions 1.0.11 - 1.0.23, may log request headers in some cases of invalid HTTP requests. The logged headers may reveal valid access tokens to those with access to server logs. This may affect only invalid HTTP requests where logging at WARN level is enabled.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Broadcom Redhat
Products
Reactor Netty Camel Spring Boot Openshift Application Runtimes