{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.5.14"
              },
              {
                "last_affected": "2.5.33"
              },
              {
                "introduced": "6.0.0"
              },
              {
                "fixed": "6.12.0"
              },
              {
                "introduced": "7.0.0"
              },
              {
                "fixed": "7.4.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "04db84135866b136aa4366234e81a0e4aa7bc7ca"
            },
            {
              "last_affected": "ca8d57c538136983a0180ac508ebcfabaf73f839"
            },
            {
              "introduced": "68fb49c10e083dce829476778eec726fc90c8c38"
            },
            {
              "fixed": "07aea27ba59aa8c4d9fda05bfeec3bf80f2a0473"
            },
            {
              "introduced": "1d95543fbf2c873d5dab1773f951c38e3220b4e5"
            },
            {
              "fixed": "7ba6ef01a9215e8ce6ce5a9e82f5b418714f2920"
            }
          ],
          "repo": "https://github.com/apache/struts",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-405"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104712.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "2.5.14"
          },
          {
            "last_affected": "2.5.33"
          },
          {
            "introduced": "6.0.0"
          },
          {
            "last_affected": "6.11.0"
          },
          {
            "introduced": "7.0.0"
          },
          {
            "last_affected": "7.3.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Asymmetric resource consumption (amplification) vulnerability in Apache Struts. When a request parameter is bound to an arbitrary-precision decimal (java.math.BigDecimal) property that is then rendered through the Struts tag library, the framework can produce a response many orders of magnitude larger than the request, allowing an unauthenticated remote attacker to exhaust server CPU and outbound network capacity with sustained low-volume traffic. Applications that do not bind request parameters to BigDecimal properties, or never render such a property through the Struts tag library, are not affected.\n\nThis issue affects Apache Struts: from 2.5.14 through 2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0.\n\nUsers are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.",
  "id": "CVE-2026-104712",
  "modified": "2026-10-10T02:30:23.843265204Z",
  "published": "2026-10-05T18:35:41.767Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/05/11"
    },
    {
      "type": "WEB",
      "url": "https://repo.maven.apache.org/maven2"
    },
    {
      "type": "ADVISORY",
      "url": "https://cwiki.apache.org/confluence/display/WW/S2-076"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104712.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104712"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Struts: Disproportionate response size when rendering BigDecimal request parameters"
}