CVE-2026-41715: medium-severity vulnerability in Spring Reactor Netty
Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.1epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
Spring · Reactor NettyRelated CVEs — Spring Reactor Netty
In the same product, most dangerous first.
CVE-2023-34054MEDIUMReactor Netty HTTP Server Metrics DoS VulnerabilityEPSS 0.9%CVE-2026-47874MEDIUMReactor Netty HTTP Server Denial of Service With Pipelined RequestsEPSS 0.4%CVE-2026-47845MEDIUMReactor Netty HTTP Server may incorrectly evaluate proxy addressesEPSS 0.3%CVE-2026-47848MEDIUMReactor Netty WebSocket Client Leaks Credentials On RedirectEPSS 0.3%CVE-2026-47843LOWReactor Netty may incorrectly route traffic due to DNS resolver reuseEPSS 0.3%CVE-2026-47844MEDIUMReactor Netty HTTP Server Leaks Exception DetailsEPSS 0.2%