Summary
The general-purpose data-binding functionality and tree-model for Jackson Data Processor. It builds on core streaming parser/generator package, and uses Jackson Annotations for configuration.
Security Fix(es):
* jackson-databind: Jackson-databind: Security bypass allows arbitrary code execution (CVE-2026-54513)
* jackson-databind: jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | jackson-annotations | 0:2.21-1.el9_8 |
| Rocky Linux · 9 | jackson-core | 0:2.21.4-1.el9_8 |
| Rocky Linux · 9 | jackson-databind | 0:2.21.4-1.el9_8 |
| Rocky Linux · 9 | jackson-jaxrs-providers | 0:2.21.4-1.el9_8 |
| Rocky Linux · 9 | jackson-modules-base | 0:2.21.4-1.el9_8 |
Vulnerabilities 2
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High 8.1CVE-2026-54512 Public exploit
jackson-databind: PolymorphicTypeValidator bypass via generic type parameters allows arbitrary class instantiation
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, jackson-databind's PolymorphicTypeValidator (PTV) is the primary safety mechanism guarding polymor…
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High 8.1
jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIfSubTypeIsArray)
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…