GHSA-6v53-7c9g-w56r
jackson-core has Nesting Depth Constraint Bypass in `UTF8DataInputJsonParser` potentially allowing Resource Exhaustion
Quick fix
GHSA-6v53-7c9g-w56r — tools.jackson.core:jackson-core: upgrade to the fixed version with the command below.
# pom.xml: bump <version>3.1.0</version> for tools.jackson.core:jackson-coreDetails
### Summary 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).
The related fix for com.fasterxml.jackson.core:jackson-core, CVE-2025-52999, was not fully applied to tools.jackson.core:jackson-core until the 3.1.0 release. It is recommended that 3.0.x users upgrade.
### Patches jackson-core contains a configurable limit for how deep Jackson will traverse in an input document. This check was missing in a few places in tools.jackson.core:jackson-core.
The change is in https://github.com/FasterXML/jackson-core/pull/1554. jackson-core will throw a StreamConstraintsException if the limit is reached.
jackson-databind also benefits from this change because it uses jackson-core to parse JSON inputs.
### Workarounds Users should avoid parsing input files from untrusted sources.
### Resources [GHSA-6v53-7c9g-w56r](https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r) https://nvd.nist.gov/vuln/detail/CVE-2025-52999 https://github.com/FasterXML/jackson-core/pull/1554
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Affected packages
3.0.0Fixed in: 3.1.0# pom.xml: bump <version>3.1.0</version> for tools.jackson.core:jackson-coreReferences
- https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r[WEB]
- https://github.com/FasterXML/jackson-core/security/advisories/GHSA-h46c-h94j-95f3[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2025-52999[ADVISORY]
- https://nvd.nist.gov/vuln/detail/CVE-2026-29062[ADVISORY]
- https://github.com/FasterXML/jackson-core/pull/1554[WEB]
- https://github.com/FasterXML/jackson-core/commit/8b25fd67f20583e75fb09564ce1eaab06cd5a902[WEB]
- https://github.com/FasterXML/jackson-core[PACKAGE]