CVE-2026-41853: Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux

June 9, 2026 (updated July 30, 2026)

Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks.

Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

References

github.com/advisories/GHSA-cjpg-rgq5-fr37
github.com/spring-projects/spring-framework/releases/tag/v6.2.19
github.com/spring-projects/spring-framework/releases/tag/v7.0.8
nvd.nist.gov/vuln/detail/CVE-2026-41853
spring.io/security/cve-2026-41853

Code Behaviors & Features

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