CVE-2026-47890: Spring Framework Server Sent Event stream corruption while rendering fragments

August 27, 2026 (updated October 7, 2026)

Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events (SSE) with view fragments. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19

References

github.com/advisories/GHSA-j9f9-w8pj-32f8
nvd.nist.gov/vuln/detail/CVE-2026-47890
spring.io/security/cve-2026-47890

Code Behaviors & Features

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