CVE-2026-47843

Reactor Netty may incorrectly route traffic due to DNS resolver reuse

State: Published
Severity: 3.7 Low
Published: Aug 26, 2026
Updated: Aug 26, 2026
Reserved: May 20, 2026

Description

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

Scores

CVSS	Score	Vector	Source
3.1	3.7 Low	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N	vmware

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
Reactor NettySpring	1.3.0 through 1.3.6Affected 1.1.0 through 1.2.18Affected 1.0.52 and earlierAffected

References

https://spring.io/security/cve-2026-47843

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