CVE-2026-59313 [CRITICAL] – Spring MVC applications using the functional web framework are vulnerable to stream corrup

Spring MVC applications using the functional web framework are vulnerable to stream corruption when using Server-Sent Events (SSE).
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