{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "6.5.0"
              },
              {
                "last_affected": "6.5.10"
              },
              {
                "introduced": "7.1.0"
              },
              {
                "fixed": "7.1.0.1"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "57110e69a935c587df9c0d67541857faea2645c3"
            },
            {
              "last_affected": "5624e08f74a436c5709db81888f552a19ed779d1"
            },
            {
              "introduced": "79963f89e3cab04addfe32aa4b419e5ffb73e909"
            },
            {
              "fixed": "ae4c9bb8eff504f26b67cc6ac65fed2c8fb8382e"
            }
          ],
          "repo": "https://github.com/spring-projects/spring-integration",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "vmware",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59321.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "7.1.0"
          },
          {
            "last_affected": "7.1.0"
          },
          {
            "introduced": "7.0.0"
          },
          {
            "last_affected": "7.0.5"
          },
          {
            "introduced": "6.5.0"
          },
          {
            "last_affected": "6.5.10"
          },
          {
            "introduced": "6.4.0"
          },
          {
            "last_affected": "6.4.12"
          },
          {
            "last_affected": "5.5.21"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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.\nSpring Integration 7.1.0\nSpring Integration 7.0.0 - 7.0.5\nSpring Integration 6.5.0 - 6.5.10\nSpring Integration 6.4.0 - 6.4.12\nSpring Integration 5.5.21 and earlier",
  "id": "CVE-2026-59321",
  "modified": "2026-09-02T03:30:46.023141876Z",
  "published": "2026-08-27T18:04:49.035Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://spring.io/security/cve-2026-59321"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59321.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59321"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Shared JSR-223 ScriptEngine evaluated concurrently without THREADING check"
}