Fluid Attacks Database

Description

Spring Framework Denial of Service via Multipart Requests in WebFlux Spring WebFlux applications are vulnerable to Denial of Service (DoS) attacks when processing multipart requests.

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.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
debian 13	libspring-java	=4.3.30-3 \|\| =4.3.30-4	-
debian 14	libspring-java	=4.3.30-3 \|\| =4.3.30-4	-
debian 11	libspring-java	=4.3.30-1 \|\| =4.3.30-2 \|\| =4.3.30-3 \|\| =4.3.30-4	-
debian 12	libspring-java	=4.3.30-2 \|\| =4.3.30-3 \|\| =4.3.30-4	-
maven	org.springframework:spring-webflux	>=7.0.0 <7.0.8 \|\| >=6.2.0 <6.2.19 \|\| >=6.1.0 <=6.1.21 \|\| >=0 <=5.3.39	7.0.8, 6.2.19

Aliases

1. CVE-2026-418402. NVD-2026-418403. OSV-DEBIAN-2026-418404. OSV-2026-418405. GCVE-2026-418406. SECURITY-TRACKER-CVE-2026-41840

References

1. https://github.com/spring-projects/spring-framework/releases/tag/v6.2.192. https://github.com/spring-projects/spring-framework/releases/tag/v7.0.83. https://spring.io/security/cve-2026-41840

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