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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59324
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-27 20:17:58 UTC
Updated2026-08-28 23:17:11 UTC
DescriptionWhen 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

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

EPSS: 0.002370000 probability, percentile 0.145010000 (date 2026-08-28)

Problem Types: CWE-362 | CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
3.1CNACVSS8.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Spring Spring Integration affected 7.1.0 custom Not specified
CNA Spring Spring Integration affected 7.0.0 7.0.5 custom Not specified
CNA Spring Spring Integration affected 6.5.0 6.5.10 custom Not specified
CNA Spring Spring Integration affected 6.4.0 6.4.12 custom Not specified
CNA Spring Spring Integration affected 5.5.21 custom Not specified

References

ReferenceSourceLinkTags
spring.io/security/cve-2026-59324 [email protected] spring.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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