Bug 2525232 (CVE-2026-59324)

Summary: CVE-2026-59324 org.springframework.integration/spring-integration-core: Spring Integration: Information disclosure via cross-message header leakage
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gmalinko, janstey, pdelbell, rstepani
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in Spring Integration. When an IntegrationFlow uses `.fluxTransform()` with an asynchronous `fluxFunction` that emits raw payloads, concurrent requests on the same `FluxMessageChannel` subscription can have their reply headers copied from other messages. This information disclosure vulnerability allows an attacker to potentially access sensitive data such as `replyChannel`, `errorChannel`, `correlationId`, or other security-related headers from concurrent requests.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2529827    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-27 20:18:41 UTC
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