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GHSA-j9f9-w8pj-32f8

Spring Framework Server Sent Event stream corruption while rendering fragments

Source: GitHub Advisory Database (reviewed) Critical CVE-2026-47890

Packages

EcosystemPackageAffectedFixed in
Maven org.springframework:spring-webflux >= 6.2.0, <= 6.2.19 no fix listed
Maven org.springframework:spring-webflux >= 7.0.0, < 7.0.9 7.0.9
Maven org.springframework:spring-webmvc >= 6.2.0, <= 6.2.19 no fix listed
Maven org.springframework:spring-webmvc >= 7.0.0, < 7.0.9 7.0.9

Details

As written in the advisory (Markdown source, shown as plain text).

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

External links from the advisory. They lead to third-party sites.