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8.7

Jackson Data Processor: Unrestricted JSON Parsing Causes Crash

CVE-2026-29062 GHSA-6v53-7c9g-w56r GHSA-6v53-7c9g-w56r
Summary

A bug in Jackson Data Processor's parsing function can cause the program to crash if it encounters a very deeply nested JSON document. This could lead to a denial of service. Users should update to version 3.1.0 or later to fix the issue.

What to do
  • Update jackson tools.jackson.core:jackson-core to version 3.1.0.
Affected software
VendorProductAffected versionsFix available
jackson tools.jackson.core:jackson-core > 3.0.0 , <= 3.1.0 3.1.0
fasterxml jackson-core > 3.0.0 , <= 3.1.0 –
Original title
jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor. From version 3.0.0 to before version 3.1.0, the UTF8DataInputJsonPar...
Original description
jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor. From version 3.0.0 to before version 3.1.0, the UTF8DataInputJsonParser, which is used when parsing from a java.io.DataInput source, bypasses the maxNestingDepth constraint (default: 500) defined in StreamReadConstraints. A similar issue was found in ReaderBasedJsonParser. This allows a user to supply a JSON document with excessive nesting, which can cause a StackOverflowError when the structure is processed, leading to a Denial of Service (DoS). This issue has been patched in version 3.1.0.
nvd CVSS4.0 8.7
Vulnerability type
CWE-770 Allocation of Resources Without Limits
Published: 6 Mar 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026