CVE-2026-47893 Security Details

CVE ID

CVE-2026-47893

CWE

CWE-209

CVE Description

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 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

Published

Aug 20, 2026

CVSS Score & Severity

2.1Low

CVSS Vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.416%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/springframework/web/reactive/socket/server/support/HandshakeWebSocketService.handleRequest(Lorg/springframework/web/server/ServerWebExchange;Lorg/springframework/web/reactive/socket/WebSocketHandler;)Lreactor/core/publisher/Mono;

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

spring.ioPROJECT