Reactor Netty HTTP is vulnerable to credential leaks during chained redirects

MEDIUM 6.1CVE-2025-22227 · GHSA-4q2v-9p7v-3v22 · Published 16/07/2025 · updated 17/06/2026

In short

CVE-2025-22227 is a MEDIUM (CVSS 6.1) vulnerability affecting io.projectreactor.netty:reactor-netty-http.
Chance of exploitation in the next 30 days (EPSS): 0.40%, higher than 34.8% of all vulnerabilities.
Fix: update to 1.3.0-M5, 1.2.8 or later.

Package	Affected versions	Patched versions
io.projectreactor.netty:reactor-netty-http Maven	`≥ 1.3.0-M1, < 1.3.0-M5< 1.2.8`	`1.3.0-M51.2.8`

Description

In some specific scenarios with chained redirects, Reactor Netty HTTP client leaks credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.

NVD description

In some specific scenarios with chained redirects, Reactor Netty HTTP client leaks credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.

References

nvd.nist.gov/vuln/detail/CVE-2025-22227 · ADVISORY
reactor/reactor-netty commit 5228923 · WEB
reactor/reactor-netty · PACKAGE
spring.io/security/cve-2025-22227 · WEB

More vulnerabilities in io.projectreactor.netty:reactor-netty-http

See all →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free

Package

Affected versions

Patched versions

io.projectreactor.netty:reactor-netty-http

Maven

≥ 1.3.0-M1, < 1.3.0-M5< 1.2.8

1.3.0-M51.2.8

Description

In some specific scenarios with chained redirects, Reactor Netty HTTP client leaks credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.

NVD description

In some specific scenarios with chained redirects, Reactor Netty HTTP client leaks credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects.

More vulnerabilities in io.projectreactor.netty:reactor-netty-http

See all →