CVE-2026-47893 Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketService

A Spring WebFlux application that supports WebSocket connections may expose indirectly sensitive user information by including request headers in an exception reason. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30...

CVE-2026-47893

CVE-2026-47893 affects the HandshakeWebsocketService component in Spring WebFlux . A Spring WebFlux application supporting WebSocket connections may expose indirectly sensitive user information by including request headers in an exception reason during the handshake process. An attacker can trigg...

cve-2026-47893 - LOW - Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketService

cve-2026-47893 - LOW - Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketService...

Information Exposure

Overview org.springframework:spring-webflux is a Spring Framework module that contains support for reactive HTTP and WebSocket clients as well as for reactive server web applications including REST, HTML browser, and WebSocket style interactions. Affected versions of this package are vulnerable t...