CVE-2026-59324

fluxTransform shared RequestMessageHolder causes cross-message header leakage under async fluxFunction

Published: Aug 27, 2026Updated: Sep 1, 2026 Sources: CVE List NVDCWE-362

8.2HIGH

Description

When an IntegrationFlow uses .fluxTransform() with an asynchronous/reordering fluxFunction that emits raw payloads, concurrent requests on the same FluxMessageChannel subscription have their reply headers (replyChannel, errorChannel, correlationId, any propagated security/tenant headers) copied from whichever message was most recently consumed upstream. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12 Spring Integration 5.5.21 and earlier

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-362

Affected Products

vmware

commercial·USaka vmware inc

spring integrationOn-prem

Cloud & SaaS / container-orchestration

Spring

oss-projectaka spring security, spring framework, spring boot

Spring Integration

OSS Libraries

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://spring.io/security/cve-2026-59324

spring.io

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