{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.10.0"
              },
              {
                "fixed": "2.18.8"
              },
              {
                "introduced": "2.19.0"
              },
              {
                "fixed": "2.21.4"
              },
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.1.4"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "a1eedfdeea46f2a8da0ed23f06e7e1d39050499b"
            },
            {
              "fixed": "0b422144d1785200e44a0b00c973f6ac95adcf5a"
            },
            {
              "introduced": "f644a920f4ac768797edf7709070411837c83ef8"
            },
            {
              "fixed": "dd72fa6c89b5cea6c4eba5a8604f248bbc5d93e5"
            },
            {
              "introduced": "d51183e4fa171235bcd31c63268c5ad1745afb8c"
            },
            {
              "fixed": "0105ba7c8c7d2aa59707c458eeb6c27e77779734"
            },
            {
              "fixed": "01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5"
            },
            {
              "fixed": "24529da29fdf46ff94ca38de9ebf31cd188f5e8e"
            }
          ],
          "repo": "https://github.com/fasterxml/jackson-databind",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rmj7-2vxq-3g9f"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-184"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54513.json"
  },
  "details": "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's 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.",
  "id": "CVE-2026-54513",
  "modified": "2026-07-24T03:56:50.489242183Z",
  "published": "2026-06-23T20:53:52.543Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54513.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:36839"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:40895"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:41951"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:43218"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:43400"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44061"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44062"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44063"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44064"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44065"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44066"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:44271"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-54513"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54513.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54513"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492010"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FasterXML/jackson-databind/issues/5981"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FasterXML/jackson-databind/issues/5983"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FasterXML/jackson-databind/pull/5984"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIfSubTypeIsArray)"
}