Apache Struts: Shared serialization state in the JSON plugin

{
  "id": "022478918abcf03fe122fd2be1215ebdb6ac4ab5d455062b3d348dd6bf2c617c",
  "url": "https://osv.dev/vulnerability/CVE-2026-73632",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Struts: Shared serialization state in the JSON plugin",
    "summary": "Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-response serialization state could be shared across concurrent requests, allowing response content associated with one request to become observable in another. Only the SMD / JSON-RPC handling of the JSON interceptor is affected, which is not enabled by default; applications using the json result type are not affected. This issue affects Apache Struts: 7.2.1. Users are recommended to upgrade to version 7.3.0, which fixes the issue.",
    "evidence": "osv:CVE-2026-73632",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-73632",
      "aliases": [
        "CVE-2026-73632"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/struts",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8e31112c0bd53f4b27571f557777c06e0666f6e0"
                },
                {
                  "last_affected": "8e31112c0bd53f4b27571f557777c06e0666f6e0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:struts:7.2.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.2.1"
                      },
                      {
                        "last_affected": "7.2.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "7.2.1",
            "STRUTS_7_2_1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73632.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.250406161Z",
      "provider": "osv",
      "references": [
        "https://cwiki.apache.org/confluence/display/WW/S2-071",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73632.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73632"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-567"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "7.2.1"
                  },
                  {
                    "last_affected": "7.2.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73632.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73632",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507828,
  "published_at": "2026-08-15T10:38:53.381+00:00"
}