## cve-2026-47843 - LOW - Reactor Netty may incorrectly route traffic due to DNS resolver reuse

- 種別: advisory
- 関連技術: spring, java
- CVE: CVE-2026-47843
- 公開日時: 2026-08-20T00:00:00.000Z
- 情報源: Spring Security Advisories (https://spring.io/security/cve-2026-47843)
- パーマリンク: https://vulnpulse.app/items/spring-security-97d3c9311acd

In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may incorrectly reuse a previously configured DNS resolver. In order for this to happen, the application must dynamically create multiple clients (such as HttpClient or TcpClient ) that rely on different custom configuration. This can lead to traffic being routed to unintended destinations.