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CVE-2026-54513

HIGH
8.1
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-54513
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-15 18:01 UTC
Published
2026-06-23 20:53 UTC
Last updated
2026-06-23 20:57 UTC
Primary CWE
CWE-184
CWE-184: Incomplete List of Disallowed Inputs
Vendor / Product
FasterXML / jackson-databind
Sources
cve.org  ·  NVD

Severity & Metrics

8.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
FasterXML jackson-databind — >= 2.10.0, < 2.18.8, >= 2.19.0, < 2.21.4, >= 3.0.0, < 3.1.4
Weakness (CWE)
CWESourceDescription
CWE-184 cna CWE-184: Incomplete List of Disallowed Inputs
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.1 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References (6)
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