CVE-2026-59321
Shared JSR-223 ScriptEngine evaluated concurrently without THREADING check
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
INFO
Published Date :
Aug. 27, 2026, 8:17 p.m.
Last Modified :
Aug. 31, 2026, 5:27 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | dcf2e128-44bd-42ed-91e8-88f912c1401d | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply Spring Integration version 7.1.0 or later.
- Upgrade to Spring Integration 7.0.6 or later.
- Update to Spring Integration 6.5.11 or later.
- Upgrade to Spring Integration 6.4.13 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59321.
| URL | Resource |
|---|---|
| https://spring.io/security/cve-2026-59321 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59321 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59321
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59321 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59321 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 31, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* versions from (including) 6.4.0 up to (including) 6.4.12 *cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* versions from (including) 6.5.0 up to (including) 6.5.10 *cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* versions up to (including) 5.5.21 *cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.0.5.1 *cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:* versions from (including) 7.1.0 up to (excluding) 7.1.0.1 Added Reference Type VMware: https://spring.io/security/cve-2026-59321 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 28, 2026
Action Type Old Value New Value Added CWE CWE-362 Added SSVC {'id': 'CVE-2026-59321', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-28T22:43:08.110980Z'} -
New CVE Received by [email protected]
Aug. 27, 2026
Action Type Old Value New Value 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 Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/59xxx/CVE-2026-59321.json">CVE-2026-59321</a> Added Reference https://spring.io/security/cve-2026-59321