CVE-2026-29062
jackson-core: Nesting Depth Constraint Bypass in `UTF8DataInputJsonParser` potentially allowing Resource Exhaustion
- State
- Published
- Severity
- 8.7 High
- Published
- Mar 6, 2026
- Updated
- Jul 15, 2026
- Reserved
- Mar 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | GitHub_M |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
jackson-coreFasterXML |
|
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
- https://access.redhat.com/security/cve/CVE-2026-29062vdb-entry
- RHBZ#2445135issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29062.json
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