EUVD-2026-67204
GHSA-37gx-w2pf-9hpp
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Network-accessible endpoint with no authentication required; concurrent load naturally triggers header leakage without attacker-controlled timing; integrity impact is low (misdirected routing only); no availability impact.
Primary rating from Vendor (vmware).
CVSS VectorVendor: vmware
Lifecycle Timeline
2DescriptionCVE.org
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
AnalysisAI
Spring Integration's reactive message pipeline leaks reply routing and security headers across concurrent users when an IntegrationFlow uses .fluxTransform() with an asynchronous or reordering operator that emits raw payloads, causing one user's replyChannel, correlationId, and security or tenant headers to be applied to another concurrent user's response. Affected versions span the 5.5.x, 6.4.x, 6.5.x, 7.0.x, and 7.1.0 release lines across the core Spring Integration library, as confirmed by VMware via the spring.io security advisory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target application is built on Spring Integration and that at least one IntegrationFlow is configured with .fluxTransform() using an asynchronous or reordering Flux operator (such as flatMap, publishOn backed by a thread pool, or any non-order-preserving operator) that emits raw payloads rather than Spring Integration Message objects. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.2 score (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N) reflects a network-exploitable vulnerability with no authentication barrier and high confidentiality impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to upgrade to a fixed release within the affected branch; consult the official VMware Spring security advisory at https://spring.io/security/cve-2026-59324 for the specific patched version per branch, as exact fixed version numbers are not independently confirmed from the provided data and must be verified there before upgrading. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all production deployments to identify applications using Spring Integration 5.5.x, 6.4.x, 6.5.x, 7.0.x, or 7.1.0, particularly those using .fluxTransform() with asynchronous or message-reordering operators; enable detailed logging of reply channel routing and correlation IDs to establish baseline. …
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