Spring Security Advisories

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Potential for improper filtering of HTTP headers in Spring Cloud Function

LOW | AUGUST 20, 2026 | CVE-2026-59298

Description

Potential for improper filtering of HTTP headers in Spring Cloud Function.

Affected Spring Products and Versions

Spring Cloud Function:

  • 5.0.0 - 5.0.3
  • 4.3.0 - 4.3.4
  • 4.2.0 - 4.2.7
  • 3.2.16 and earlier

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
5.0.4OSS
4.3.5Enterprise Support Only
4.2.8Enterprise Support Only
3.2.17Enterprise 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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