Spring Security Advisories

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Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints

MEDIUM | AUGUST 20, 2026 | CVE-2026-47892

Description

A WebFlux application using functional endpoints and deployed with DispatcherServlet may be vulnerable to a header predicate bypass in a pre-flight request.

Affected Spring Products and Versions

Spring Framework:

  • 7.0.0 - 7.0.8
  • 6.2.0 - 6.2.19
  • 6.1.0 - 6.1.28
  • 6.0.0 - 6.0.30
  • 5.3.0 - 5.3.49
  • 5.2.5 - 5.2.25

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
7.0.9OSS
7.0.8.1Enterprise Support Only
6.2.20Enterprise Support Only
6.1.29Enterprise Support Only
6.0.31Enterprise Support Only
5.3.50Enterprise Support Only
5.2.26Enterprise Support Only

No further mitigation steps are necessary.

References

History

  • 2026-08-20: Initial vulnerability report published.

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy

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