Medium severity4.2NVD Advisory· Published Aug 27, 2026· Updated Aug 31, 2026
CVE-2026-59321
CVE-2026-59321
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2<=7.0.5, <=6.5.10, <=6.4.12, <=5.5.21+ 1 more
- (no CPE)range: <=7.0.5, <=6.5.10, <=6.4.12, <=5.5.21
- (no CPE)range: <=5.5.21
Patches
Vulnerability mechanics
References
1- spring.io/security/cve-2026-59321nvdVendor Advisory
News mentions
1- Spring Projects: 25 Vulnerabilities Disclosed, Including Critical Flaws in Framework and GraphQLVypr Intelligence · Aug 27, 2026