CVE-2026-59324— fluxTransform shared RequestMessageHolder causes cross-message header leakage under async fluxFunction
Quick assessment
Affected
Spring Spring Integration
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
当 IntegrationFlow 使用 配合一个异步/重新排序的 （该函数发射原始负载）时，针对同一 订阅的并发请求，其响应头（如 、 、 ，以及传播的安全/租户头等）会被错误地复制自上游最近消费的那条消息。 受影响版本： 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.
Possible ATT&CK Techniques 1 AI
T1029 · Scheduled Transfer
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I. Basic Information for CVE-2026-59324
Vulnerability Information
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Vulnerability Title
fluxTransform shared RequestMessageHolder causes cross-message header leakage under async fluxFunction
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Spring | Spring Integration | 7.1.0 | - |
|
II. Public POCs for CVE-2026-59324
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-59324 (1)
Same Patch Batch · Spring · 2026-08-27 · 64 CVEs total
| CVE-2026-59270 | 9.4 CRITICAL | Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN o |
| CVE-2026-59316 | 8.2 HIGH | Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XS |
| CVE-2026-47877 | 8.2 HIGH | Spring Security Authorization Server Default Consent Page is vulnerable to Cross-Site Scri |
| CVE-2026-59307 | 8.0 HIGH | Deserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but |
| CVE-2026-47879 | 7.7 HIGH | Spring Cloud Gateway SSRF and native file access with gRPC |
| CVE-2026-47849 | 7.1 HIGH | Spring Data REST allows mutation of identifier and version properties via JSON Patch |
| CVE-2026-59311 | 6.8 MEDIUM | Fixed predictable /tmp/ziptransformer work directory enables symlink pre-creation |
| CVE-2026-59272 | 6.8 MEDIUM | Log4j2 AmqpAppender disables TLS hostname verification by default |
| CVE-2026-59293 | 6.6 MEDIUM | SMB minimum protocol dialect defaults to SMB1 |
| CVE-2026-59284 | 6.6 MEDIUM | Spring Cloud Commons no allow list for writable env actuator endpoint |
| CVE-2026-59275 | 6.6 MEDIUM | Remote JVM termination: nested-array Java deserialization bypasses allowlist, triggers Sta |
| CVE-2026-59317 | 6.5 MEDIUM | In Spring for Apache Kafka, missing header validation in DeadLetterPublishingRecovererFact |
| CVE-2026-59274 | 6.5 MEDIUM | Unbounded decompression in UnZipTransformer enables zip-bomb DoS |
| CVE-2026-59278 | 6.5 MEDIUM | In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types |
| CVE-2026-59320 | 6.5 MEDIUM | In Spring AMQP the link credit never replenished on listener exception path |
| CVE-2026-47864 | 6.4 MEDIUM | Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution |
| CVE-2026-59322 | 6.3 MEDIUM | EmbeddedHeadersJsonMessageMapper default gives wire peer full control of MessageHeaders |
| CVE-2026-59276 | 5.9 MEDIUM | Timing Attack via Non-Constant-Time Comparison of Sensitive Values |
| CVE-2026-47881 | 5.9 MEDIUM | Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File |
| CVE-2026-59294 | 5.9 MEDIUM | Arbitrary File Write via Path Traversal in ResourceCacheService |
Showing top 20 of 64 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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CVE-2026-59293
SMB minimum protocol dialect defaults to SMB1
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V. Comments for CVE-2026-59324
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