Vulnerability Details CVE-2026-29062
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.3%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-29062
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cpe:2.3:a:fasterxml:jackson-core:*