CVE-2026-29062

Summary

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.

Affected Software

Weaknesses

• CWE-770: CWE-770: Allocation of Resources Without Limits or Throttling

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

jackson-core: jackson-core: Denial of Service via excessive JSON nesting

Additional References

• https://access.redhat.com/security/cve/CVE-2026-29062
• https://bugzilla.redhat.com/show_bug.cgi?id=2445135
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29062.json

References

• https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r
• https://github.com/FasterXML/jackson-core/pull/1554
• https://github.com/FasterXML/jackson-core/commit/8b25fd67f20583e75fb09564ce1eaab06cd5a902

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