WS-2026-0003 (High) detected in jackson-core-2.9.10.jar, jackson-core-2.10.4.jar

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WS-2026-0003 - High Severity Vulnerability

Vulnerable Libraries - jackson-core-2.9.10.jar, jackson-core-2.10.4.jar

jackson-core-2.9.10.jar

Core Jackson processing abstractions (aka Streaming API), implementation for JSON

Library home page: http://fasterxml.com/

Path to vulnerable library: /home/wss-scanner/.ivy2/cache/com.fasterxml.jackson.core/jackson-core/bundles/jackson-core-2.9.10.jar

Dependency Hierarchy:

• play-logback_2.13-2.8.2.jar (Root Library)
  • play_2.13-2.8.2.jar
    • jjwt-0.9.1.jar
      • jackson-databind-2.9.10.1.jar
        • ❌ jackson-core-2.9.10.jar (Vulnerable Library)

jackson-core-2.10.4.jar

Core Jackson processing abstractions (aka Streaming API), implementation for JSON

Library home page: http://fasterxml.com/

Path to dependency file: /dd-smoke-tests/springboot-openliberty/application/pom.xml

Path to vulnerable library: /dd-smoke-tests/springboot-openliberty/application/target/liberty/wlp/usr/shared/resources/lib.index.cache/56/4f6e5706096179537114299e6d7492d2c38da182df8d7834a4c9141b078ef3/jackson-core-2.10.4.jar,/home/wss-scanner/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.10.4/jackson-core-2.10.4.jar,/home/wss-scanner/.ivy2/cache/com.fasterxml.jackson.core/jackson-core/bundles/jackson-core-2.10.4.jar

Dependency Hierarchy:

• ❌ jackson-core-2.10.4.jar (Vulnerable Library)

Found in HEAD commit: 2819174635979a19573ec0ce8e3e2b63a3848079

Found in base branch: master

Vulnerability Details

The non-blocking (async) JSON parser in jackson-core bypasses the maxNumberLength constraint (default: 1000 characters) defined in StreamReadConstraints. This allows an attacker to send JSON with arbitrarily long numbers through the async parser API, leading to excessive memory allocation and potential CPU exhaustion, resulting in a Denial of Service (DoS).

The standard synchronous parser correctly enforces this limit, but the async parser fails to do so, creating an inconsistent enforcement policy.

Publish Date: 2026-03-02

URL: WS-2026-0003

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-72hv-8253-57qq

Release Date: 2026-03-02

Fix Resolution: 2.18.6

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