Bug 2492010 (CVE-2026-54513) - CVE-2026-54513 jackson-databind: Jackson-databind: Security bypass allows arbitrary code execution
Summary: CVE-2026-54513 jackson-databind: Jackson-databind: Security bypass allows arb...
Keywords:
Status: NEW
Alias: CVE-2026-54513
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2492651 2492652
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-23 22:01 UTC by OSIDB Bzimport
Modified: 2026-07-03 07:13 UTC (History)
137 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-23 22:01:57 UTC 
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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