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CVE-2026-41715

Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect

MEDIUM
6.1
CVSS Score
Published: June 9, 2026 at 03:48 AM UTC
Updated: July 23, 2026 at 07:32 PM UTC
1 product affected across 1 vendorReactor Netty

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Reactor Netty· Spring
60%
1.0.0 ≤ v < 1.0.521.1.0 ≤ v < 1.1.361.2.0 ≤ v < 1.2.17.11.3.0 ≤ v < 1.3.15.11.0.01.1.01.2.01.3.0
Affected range stops below 1.0.52, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.1.36, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.2.17.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.3.15.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://spring.io/security/cve-2026-41715

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMvmware
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-522

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