CVE-2026-41853CWE-444

Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux

Medium · published June 9, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
22.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00310 · 22.6th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2026-06-09T03:51Z
EPSS history
Timeline
  • 09 JUN 03:51Z
    Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux
    cvelistv5