CVE-2026-41853 PUBLISHED

Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux

Assigner: vmware
Reserved: 22.04.2026 Published: 09.06.2026 Updated: 09.06.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 5.3

Product Status

Vendor Spring
Product Spring Framework
Versions Default: unaffected
  • affected from 7.0.0 to 7.0.8 (excl.)
  • affected from 6.2.0 to 6.2.19 (excl.)
  • affected from 6.1.0 to 6.1.28 (excl.)
  • affected from 5.3.0 to 5.3.49 (excl.)

References

Problem Types

  • CWE-444: Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling) CWE

Impacts

  • An attacker can send malicious multipart requests that are parsed differently by the application versus its WAF or proxy, bypassing security checks in applications that accept multipart requests.