CVE-2026-29062
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.
How to fix
- fasterxml jackson-core3.1.0 or later
- tools.jackson.core:jackson-core3.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fasterxml jackson-core | 3.0.0 ≤ v < 3.1.0 | 3.1.0 |
| tools.jackson.core:jackson-coreMaven | 3.0.0 ≤ v < 3.1.0 | 3.1.0 |
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