jackson-core-2.17.1.jar: 1 vulnerabilities (highest severity is: 7.5)

[mend-bolt-for-github]

Vulnerable Library - jackson-core-2.17.1.jar

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

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

Path to dependency file: /cheshire-cat-java-client/pom.xml

Path to vulnerable library: /cheshire-cat-java-client/pom.xml,/home/wss-scanner/.ivy2/cache/com.fasterxml.jackson.core/jackson-core/jars/jackson-core-2.17.1.jar,/cheshire-cat-java-client-test/pom.xml,/tmp/containerbase/cache/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.17.1/5e52a11644cd59a28ef79f02bddc2cc3bab45edb/jackson-core-2.17.1.jar

Found in HEAD commit: 165e00c7ca3fecabf006d03d436a30b0fe90cbdb

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (jackson-core version)	Remediation Possible**
WS-2026-0003	High	7.5	jackson-core-2.17.1.jar	Direct	2.18.6	❌

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

WS-2026-0003

Vulnerable Library - jackson-core-2.17.1.jar

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

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

Path to dependency file: /cheshire-cat-java-client/pom.xml

Path to vulnerable library: /cheshire-cat-java-client/pom.xml,/home/wss-scanner/.ivy2/cache/com.fasterxml.jackson.core/jackson-core/jars/jackson-core-2.17.1.jar,/cheshire-cat-java-client-test/pom.xml,/tmp/containerbase/cache/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.17.1/5e52a11644cd59a28ef79f02bddc2cc3bab45edb/jackson-core-2.17.1.jar

Dependency Hierarchy:

• ❌ jackson-core-2.17.1.jar (Vulnerable Library)

Found in HEAD commit: 165e00c7ca3fecabf006d03d436a30b0fe90cbdb

Found in base branch: main

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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