Shared JSR-223 ScriptEngine evaluated concurrently without THREADING check
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| VMware | Spring Integration | 7.1.0; 7.0.0 – 7.0.5; 6.5.0 – 6.5.10; 6.4.0 – 6.4.12; up to 5.5.21 | — | No fix listed | CNA |
- Spring Integration VendorVMware Affected 7.1.0; 7.0.0 – 7.0.5; 6.5.0 – 6.5.10; 6.4.0 – 6.4.12; up to 5.5.21 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* | up to 5.5.21; 6.4.0 – 6.4.12; 6.5.0 – 6.5.10; 7.0.0 to before 7.0.5.1; 7.1.0 to before 7.1.0.1 | Vulnerable | VMware |
- cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* Versions up to 5.5.21; 6.4.0 – 6.4.12; 6.5.0 – 6.5.10; 7.0.0 to before 7.0.5.1; 7.1.0 to before 7.1.0.1 Vulnerable ·VMware
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Fuse 7 | Affected | No fix planned: Out of support scope |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-59321
- 2026-10-03 Alias added: GHSA-jwww-wmvq-qm8j
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More VMware Spring Integration vulnerabilities
- TI-2026-35313 Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution CVSS 3.1CRITICAL 9.8
- TI-2020-04459 Kryo Configuration Allows Code Execution with Unknown "Serialization Gadgets" CVSS 3.1CRITICAL 9.8
- TI-2019-02786 Spring Integration XML External Entity Injection (XXE) CVSS 3.0CRITICAL 9.8
- TI-2026-42455 fluxTransform shared RequestMessageHolder causes cross-message header leakage under async fluxFunction CVSS 3.1HIGH 8.2
- TI-2026-42439 Deserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but mapper keeps stale reference CVSS 3.1HIGH 8.0
- TI-2026-42425 SMB minimum protocol dialect defaults to SMB1 CVSS 3.1MEDIUM 6.6
Sources
- CVE-2026-59321 · CVE Program
- CVE-2026-59321 · NVD
- FIRST EPSS
- GHSA-jwww-wmvq-qm8j · GitHub Advisory Database · CC BY 4.0
- CVE-2026-59321 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences