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OpenAdvisories
Medium · 6.1 CVE-2026-41715 EUVD-2026-35322GHSA-pfc9-2cqg-9wq6

Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect

Published Jun 9, 2026 · Updated Jun 23, 2026 · Assigned by vmware

Description

In specific scenarios involving HTTP redirects from a secure to an insecure endpoint, the Reactor Netty HTTP client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.

Affected versions:
Reactor Netty 1.0.0 through 1.0.51; 1.1.0 through 1.1.35; 1.2.0 through 1.2.17; 1.3.0 through 1.3.5.

Affected products

VendorProductAffectedFixed
Spring Reactor Netty 1.0.0 – < 1.0.52, 1.1.0 – < 1.1.36, 1.2.0 – < 1.2.17.1, 1.3.0 – < 1.3.15.1 1.0.52

Affected packages

EcosystemPackageAffectedFixedRecord
Maven io.projectreactor.netty:reactor-netty >= 1.3.0, < 1.3.6 1.3.6 GHSA-pfc9-2cqg-9wq6
Maven io.projectreactor.netty:reactor-netty >= 1.2.0, < 1.2.18 1.2.18 GHSA-pfc9-2cqg-9wq6
Maven io.projectreactor.netty:reactor-netty >= 1.1.0, <= 1.1.31 — GHSA-pfc9-2cqg-9wq6
Maven io.projectreactor.netty:reactor-netty >= 1.0.0, <= 1.0.48 — GHSA-pfc9-2cqg-9wq6

Advisories 1

References