{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "jackson-databind",
          "vendor": "FasterXML",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.10.0, \u003c 2.18.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.19.0, \u003c 2.21.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.1.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.10.0 until 2.18.8, 2.21.4, and 3.1.4, BasicPolymorphicTypeValidator.Builder.allowIfSubTypeIsArray() allowlists any array type based only on clazz.isArray(), without validating the array\u0027s component (element) type against the configured allowlist. A PTV built with allowIfSubTypeIsArray() plus an explicit concrete-type allowlist therefore still permits EvilType[] even though EvilType is not allowlisted. When Jackson deserializes the elements and no per-element type IDs are present, it instantiates the component type directly with no further PTV check, bypassing the allowlist. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-184",
              "description": "CWE-184: Incomplete List of Disallowed Inputs",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-23T20:57:16.381Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9f",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9f"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/issues/5981",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/issues/5981"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/issues/5983",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/issues/5983"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/pull/5984",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/pull/5984"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5"
        },
        {
          "name": "https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8e"
        }
      ],
      "source": {
        "advisory": "GHSA-rmj7-2vxq-3g9f",
        "discovery": "UNKNOWN"
      },
      "title": "jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIfSubTypeIsArray)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54513",
    "datePublished": "2026-06-23T20:53:52.543Z",
    "dateReserved": "2026-06-15T18:01:15.514Z",
    "dateUpdated": "2026-06-23T20:57:16.381Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}