CVE-2026-41715

Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect

Published Jun 9, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-pfc9-2cqg-9wq6 Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', '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
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.
Title Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect
Weaknesses CWE-522
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Jun 23, 2026, 8:46 PM
Reserved
Apr 22, 2026, 6:21 AM
Status
Awaiting Analysis
Published
Jun 9, 2026, 5:16 AM
Modified
Jul 23, 2026, 8:10 AM
Severity
Moderate
Public date
Jun 9, 2026, 3:48 AM