Description
A single ScriptEngine instance is reused for every message on a script-backed channel. For JSR-223 engines that report THREADING=null (not thread-safe, e.g. the Kotlin kts engine), concurrent message processing can corrupt engine-internal state, potentially leaking one message's payload/headers bindings into another message's script evaluation or throwing spurious exceptions.
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
Published: 2026-08-27
Score: 4.2 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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References
History

Sat, 29 Aug 2026 01:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667

Fri, 28 Aug 2026 23:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Spring
Spring spring Integration
Vendors & Products Spring
Spring spring Integration

Fri, 28 Aug 2026 07:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-667

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description A single ScriptEngine instance is reused for every message on a script-backed channel. For JSR-223 engines that report THREADING=null (not thread-safe, e.g. the Kotlin kts engine), concurrent message processing can corrupt engine-internal state, potentially leaking one message's payload/headers bindings into another message's script evaluation or throwing spurious exceptions. 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
Title Shared JSR-223 ScriptEngine evaluated concurrently without THREADING check
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

Spring Spring Integration
cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published:

Updated: 2026-08-28T22:46:47.321Z

Reserved: 2026-07-04T18:14:10.167Z

Link: CVE-2026-59321

cve-icon Vulnrichment

Updated: 2026-08-28T18:11:05.443Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-27T20:17:58.147

Modified: 2026-08-28T23:17:10.990

Link: CVE-2026-59321

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-29T02:30:17Z

Weaknesses