CVEvulnerability

CVE-2026-54513

8.1 HIGH Published 2026-06-23 Modified 2026-10-25 Official page ↗
Status
Modified
Published
2026-06-23
Last modified
2026-10-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-184

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.

Affected configurations

• fasterxml jackson-databind (>= 2.10.0 < 2.18.8) • fasterxml jackson-databind (>= 2.19.0 < 2.21.4) • fasterxml jackson-databind (>= 3.0.0 < 3.1.4)

Related

Weakness · CWE (1)

  • CWE-184 Incomplete List of Disallowed Inputs weakness

References