Apache MINA: CWE-502 Deserialization of Untrusted Data (take 2)

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-42778",
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "dateUpdated": "2026-05-01T10:01:10.081Z",
    "dateReserved": "2026-04-29T13:31:49.189Z",
    "datePublished": "2026-05-01T10:01:10.081Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache",
        "dateUpdated": "2026-05-01T10:01:10.081Z"
      },
      "title": "Apache MINA: CWE-502 Deserialization of Untrusted Data (take 2)",
      "descriptions": [
        {
          "lang": "en",
          "value": "The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6.\n\n\n\n\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade\n\n\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.110, and 2.2.0 <= 2.2.6.\n\n\n\n\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "<div>The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:</div><div><div><br></div><div>The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.</div><div><br></div><div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.11, and 2.2.0 &lt;= 2.2.6.</div><div><br></div><div>The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.</div><div><br></div><div>Affected are applications using Apache MINA that call IoBuffer.getObject().</div><div><br></div><div>Applications using Apache MINA are advised to upgrade</div></div><div><br></div><div>The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.</div><div><br></div><div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.110, and 2.2.0 &lt;= 2.2.6.</div><div><br></div><div>The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.</div><div><br></div><div>Affected are applications using Apache MINA that call IoBuffer.getObject().</div><div><br></div><div>Applications using Apache MINA are advised to upgrade</div><br>"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache MINA",
          "collectionURL": "https://repo.maven.apache.org/maven2/org/apache/mina/",
          "packageName": "org.apache.mina:mina.core",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.2.X",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.2.6"
            },
            {
              "version": "2.1.X",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.1.11"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-502 Deserialization of Untrusted Data",
              "cweId": "CWE-502",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0",
          "tags": [
            "vendor-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ],
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "attackVector": "NETWORK",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL"
          }
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Venkatraman Kumar, Securin",
          "type": "reporter"
        }
      ]
    }
  }
}