Incomplete List of Disallowed Inputs Affecting com.fasterxml.jackson.core:jackson-databind package, versions [2.10.0,2.18.8)[2.19.0,2.21.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-COMFASTERXMLJACKSONCORE-17440366
- published24 Jun 2026
- disclosed23 Jun 2026
- creditOmkhar Arasaratnam
Introduced: 23 Jun 2026
NewCVE-2026-54513 (opens in a new tab)How to fix?
Upgrade com.fasterxml.jackson.core:jackson-databind to version 2.18.8, 2.21.4 or higher.
Overview
com.fasterxml.jackson.core:jackson-databind is a library which contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor.
Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs in the BasicPolymorphicTypeValidator.Builder.allowIfSubTypeIsArray() method, which allowlists an array based only on clazz.isArray() and does not validate the array's component type. An attacker who controls the deserialized JSON can instantiate types outside the configured allowlist by wrapping them in an array, because array elements without per-element type identifiers are constructed directly with no further validator check.