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GHSA-6hcq-hmm3-jj3c

Spring MVC and WebFlux has Server Sent Event stream corruption

Source: GitHub Advisory Database (reviewed) Low CVE-2026-22735

Packages

EcosystemPackageAffectedFixed in
Maven org.springframework:spring-webmvc >= 7.0.0-M1, < 7.0.6 7.0.6
Maven org.springframework:spring-webmvc >= 6.2.0, < 6.2.17 6.2.17
Maven org.springframework:spring-webmvc >= 6.0.0, <= 6.1.21 no fix listed
Maven org.springframework:spring-webmvc >= 5.3.0, <= 5.3.39 no fix listed
Maven org.springframework:spring-webflux >= 7.0.0-M1, < 7.0.6 7.0.6
Maven org.springframework:spring-webflux >= 6.2.0, < 6.2.17 6.2.17
Maven org.springframework:spring-webflux >= 6.0.0, <= 6.1.21 no fix listed
Maven org.springframework:spring-webflux >= 5.3.0, <= 5.3.39 no fix listed

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). This issue affects Spring Foundation: from 7.0.0 through 7.0.5, from 6.2.0 through 6.2.16, from 6.1.0 through 6.1.25, from 5.3.0 through 5.3.46.

References

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