{"api_version":"1","generated_at":"2026-06-24T15:05:49+00:00","cve":"CVE-2026-54513","urls":{"html":"https://cve.report/CVE-2026-54513","api":"https://cve.report/api/cve/CVE-2026-54513.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-54513","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54513"},"summary":{"title":"jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIfSubTypeIsArray)","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-06-23 21:17:02","updated_at":"2026-06-23 21:17:02"},"problem_types":["CWE-184","CWE-184 CWE-184: Incomplete List of Disallowed Inputs"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"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"}}],"references":[{"url":"https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8e","name":"https://github.com/FasterXML/jackson-databind/commit/24529da29fdf46ff94ca38de9ebf31cd188f5e8e","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9f","name":"https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-rmj7-2vxq-3g9f","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FasterXML/jackson-databind/issues/5983","name":"https://github.com/FasterXML/jackson-databind/issues/5983","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5","name":"https://github.com/FasterXML/jackson-databind/commit/01d1692c8d0ed03e51a0e3c4f8a9e6908e4931e5","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FasterXML/jackson-databind/issues/5981","name":"https://github.com/FasterXML/jackson-databind/issues/5981","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/FasterXML/jackson-databind/pull/5984","name":"https://github.com/FasterXML/jackson-databind/pull/5984","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-54513","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54513","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FasterXML","product":"jackson-databind","version":"affected >= 2.10.0, < 2.18.8","platforms":[]},{"source":"CNA","vendor":"FasterXML","product":"jackson-databind","version":"affected >= 2.19.0, < 2.21.4","platforms":[]},{"source":"CNA","vendor":"FasterXML","product":"jackson-databind","version":"affected >= 3.0.0, < 3.1.4","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"jackson-databind","vendor":"FasterXML","versions":[{"status":"affected","version":">= 2.10.0, < 2.18.8"},{"status":"affected","version":">= 2.19.0, < 2.21.4"},{"status":"affected","version":">= 3.0.0, < 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'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."}],"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"},"nvd":{"publishedDate":"2026-06-23 21:17:02","lastModifiedDate":"2026-06-23 21:17:02","problem_types":["CWE-184","CWE-184 CWE-184: Incomplete List of Disallowed Inputs"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"54513","Ordinal":"1","Title":"jackson-databind: Array subtype allowlist bypass in BasicPolymor","CVE":"CVE-2026-54513","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"54513","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"jackson-databind: Array subtype allowlist bypass in BasicPolymor"}]}}}