CVE-2026-41847

Spring Framework Security Filter Bypass in WebFlux Kotlin Router DSL

Published: Jun 9, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-284

4.8MEDIUM

Description

Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL. Affected versions: Spring Framework 5.3.0 through 5.3.48.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-284 NVD-CWE-noinfo

Affected Products

Spring

oss-projectaka spring boot, spring framework, spring security

Spring Framework

OSS Libraries

vmware

commercial·USaka vmware inc

spring frameworkLibraryLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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References

https://spring.io/security/cve-2026-41847

spring.io

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