Jackson Core: Document length constraint bypass in blocking, async, and DataInput parsers

Severity: low · CVSS 3.1 · Published 2026-04-04

Jackson Core: Document length constraint bypass in blocking, async, and DataInput parsers

Technologies: tools.jackson.core:jackson-core (Maven). Vendors: Maven.

Quick answers

Is This vulnerability exploited in the wild?
No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.
How severe is This vulnerability?
Low severity, with a CVSS score of 3.1, published 4 April 2026.
Which products and versions are affected?
tools.jackson.core:jackson-core (Maven) ECOSYSTEM:introduced=3.0.0,fixed=3.1.1.
Is there a fix for This vulnerability?
Yes. tools.jackson.core:jackson-core (Maven): upgrade to 3.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected?
Check whether you run tools.jackson.core:jackson-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • tools.jackson.core:jackson-core (Maven): upgrade to 3.1.1 or later
    # set tools.jackson.core:jackson-core to 3.1.1 in your pom.xml or build.gradle

Affected products

  • tools.jackson.core:jackson-core (Maven) ECOSYSTEM:introduced=3.0.0,fixed=3.1.1

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