Incomplete Blacklist Affecting jackson-core package, versions <2.18.8-150200.3.22.3


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.71% (50th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES155-JACKSONCORE-17928621
  • published10 Jul 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

CVE-2026-54513  (opens in a new tab)
CWE-184  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 jackson-core to version 2.18.8-150200.3.22.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jackson-core package and not the jackson-core package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1