CVE-2026-59321Shared JSR-223 ScriptEngine evaluated concurrently without THREADING check
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It affects Spring Integration and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 4.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-362
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- vmware
- NVD analysis
- Analyzed
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Spring Spring Integration spring:integration (from the name) | 7.1.0; from 7.0.0 through 7.0.5; from 6.5.0 through 6.5.10; from 6.4.0 through 6.4.12; through 5.5.21 | CNA record |
vmware spring_integration vmware:spring_integration | through 5.5.21; from 6.4.0 through 6.4.12; from 6.5.0 through 6.5.10; from 7.0.0 before 7.0.5.1; from 7.1.0 before 7.1.0.1 | NVD |
References
- https://spring.io/security/cve-2026-59321vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.