CVE-2026-59324
fluxTransform shared RequestMessageHolder causes cross-message header leakage under async fluxFunction
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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
| Vendor | spring |
| Product | spring integration |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Aug 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
Spring / Spring Integration
7.1.0 7.0.0 ≤ 7.0.5 6.5.0 ≤ 6.5.10 6.4.0 ≤ 6.4.12 0 ≤ 5.5.21