CVE-2026-59321 Security Details

CVE ID

CVE-2026-59321

CWE

CWE-362

CVE 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

Aug 20, 2026

CVSS Score & Severity

5.4Medium

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS Score

0.175%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/springframework/integration/scripting/jsr223/AbstractScriptExecutor.executeScript(Lorg/springframework/scripting/ScriptSource;Ljava/util/Map;)Ljava/lang/Object;

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

spring.ioPROJECT