Spring Framework WebSocket Vulnerability Exposing Sensitive User Information
CVE-2026-47893

7.5HIGH

Key Information:

Vendor

Spring

Status
Spring Framework
Vendor
CVE Published:
27 August 2026

What is CVE-2026-47893?

A vulnerability exists within Spring WebFlux applications that handle WebSocket connections, allowing sensitive user information to be unintentionally exposed. This occurs when request headers are included in the exception reason, potentially revealing internal user data during error handling. Applications running affected versions of the Spring Framework are at risk, necessitating immediate review and updates to mitigate the exposure of user information.

Affected Version(s)

Spring Framework 7.0.0 <= 7.0.8

Spring Framework 6.2.0 <= 6.2.19

Spring Framework 6.1.0 <= 6.1.28

References

https://spring.io/security/cve-2026-47893

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.