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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
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.
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CVE Modified by redhat-SADP7/03/2026 9:17:29 AM
Action
Type
Old Value
New Value
Changed
Affected
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CVE Modified by redhat-SADP7/02/2026 8:17:34 AM
Action
Type
Old Value
New Value
Changed
Affected
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Initial Analysis by NIST6/27/2026 5:00:19 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* versions from (including) 2.10.0 up to (excluding) 2.18.8
*cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* versions from (including) 2.19.0 up to (excluding) 2.21.4
*cpe:2.3:a:fasterxml:jackson-databind:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.1.4
New CVE Received from GitHub, Inc.6/23/2026 5:17:02 PM
Action
Type
Old Value
New Value
Added
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.
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