CVE-2026-29062: Jackson core Remote Code Execution Vulnerability
HIGHCVE-2026-29062 is a HIGH remote code execution vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Jackson core libraries in the Maven ecosystem. The issue involves jackson-core has nesting depth constraint bypass in `utf8datainputjsonparser` potentially allowing resource exhaustion. Remediation is available by upgrading affected packages to version 3.1.0.
CVE-2026-29062 at a Glance
How to Fix CVE-2026-29062
To remediate this vulnerability, upgrade all affected Jackson core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>tools.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>3.1.0</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=tools.jackson.coreHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-29062, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=tools.jackson.coreAnalyze the terminal output to locate any version of Jackson core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.1.0), your application is affected.
Note: The mvn dependency:tree -Dincludes=tools.jackson.core command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Jackson core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-29062 Affected Jackson core Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
tools.jackson.core:jackson-core
|
Maven |
≥ 3.0.0
< 3.1.0
|
3.1.0
|
References
Frequently Asked Questions
What is CVE-2026-29062?
Which Jackson core versions are affected?
What version fixes CVE-2026-29062?
Is jackson-core affected?
What CWE is associated with CVE-2026-29062?
How can I check Maven dependencies for CVE-2026-29062?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-6v53-7c9g-w56r",
"modified" : "2026-03-06T21:58:00Z",
"published" : "2026-03-04T21:23:45Z",
"aliases" : [ "CVE-2026-29062" ],
"summary" : "jackson-core has Nesting Depth Constraint Bypass in `UTF8DataInputJsonParser` potentially allowing Resource Exhaustion",
"details" : "### Summary\nThe `UTF8DataInputJsonParser`, which is used when parsing from a `java.io.DataInput` source, bypasses the `maxNestingDepth` constraint (default: 500) defined in `StreamReadConstraints`.\n\nA similar issue was found in `ReaderBasedJsonParser`.\n\nThis 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).\n\nThe 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.\n\n### Patches\njackson-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. \n\nThe change is in https://github.com/FasterXML/jackson-core/pull/1554. jackson-core will throw a StreamConstraintsException if the limit is reached.\n\njackson-databind also benefits from this change because it uses jackson-core to parse JSON inputs.\n\n### Workarounds\nUsers should avoid parsing input files from untrusted sources.\n\n### Resources\n[GHSA-6v53-7c9g-w56r](https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r)\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-52999\nhttps://github.com/FasterXML/jackson-core/pull/1554",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "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"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "tools.jackson.core:jackson-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.0.0"
}, {
"fixed" : "3.1.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-core/security/advisories/GHSA-6v53-7c9g-w56r"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-core/security/advisories/GHSA-h46c-h94j-95f3"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-52999"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-29062"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-core/pull/1554"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-core/commit/8b25fd67f20583e75fb09564ce1eaab06cd5a902"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/FasterXML/jackson-core"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-770" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-03-04T21:23:45Z",
"nvd_published_at" : "2026-03-06T08:16:26Z"
}
}