CVE-2026-50193: jackson-databind Deeply Nested JsonNode Throws StackOverflowError Vulnerability

MODERATE
Advisory Identifier: GHSA-3wrr-7qpf-2prh
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2026-50193 is a MODERATE (CVSS 7.5) deeply nested jsonnode throws stackoverflowerror vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting jackson-databind libraries in the Maven ecosystem. The issue involves deeply nested jsonnode throws stackoverflowerror for tostring(). Remediation is available by upgrading affected packages to version 2.14.0.

CVE-2026-50193 at a Glance

CVE Identifier CVE-2026-50193
GHSA Identifier GHSA-3wrr-7qpf-2prh
Severity MODERATE
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product jackson-databind
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-50193

To remediate this vulnerability, upgrade all affected jackson-databind dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.fasterxml.jackson.core:jackson-databind fixed: 2.14.0 
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.14.0</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=com.fasterxml.jackson.core

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-50193, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.fasterxml.jackson.core

Analyze the terminal output to locate any version of jackson-databind in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.14.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.fasterxml.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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In jackson-databind, 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

### Impact Potential Denial-of-Service when attacker sends deeply nested JSON if (and only if) service: 1. Reads deeply nested (1000s of levels) JSON as `JsonNode` (ObjectMapper.readTree()) 2. Writes out same (or modifided) node using `JsonNode.toString()` which can consume significant amount of resources with concurrent relatively small requests (1000 nested arrays is 2kB). ### Patches Fixed in 2.14.0 via https://github.com/FasterXML/jackson-databind/issues/3447. ### Workarounds Avoid serializing `JsonNode` using `toString()`: use ObjectMapper.writeValueAsString(node)

CVE-2026-50193 Affected jackson-databind Versions

1 component(s)
Fixed Versions:
2.14.0
Product / Package Ecosystem Affected Versions Fixed Version
com.fasterxml.jackson.core:jackson-databind
maven/com.fasterxml.jackson.core/jackson-databind
Maven
≥ 2.10.0
< 2.14.0
2.14.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-3wrr-7qpf-2prh
NVD — CVE-2026-50193 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50193
jackson-databind Source Repository REPOSITORY
https://github.com/FasterXML/jackson-databind/issues/3447
Security Fix Commit FIX COMMIT
https://github.com/FasterXML/jackson-databind/commit/a1fa4ae4ecf5cee16da465985f135f3e81816f8c
jackson-databind Source Repository REPOSITORY
https://github.com/FasterXML/jackson-databind

Frequently Asked Questions

What is CVE-2026-50193?
CVE-2026-50193 is a security vulnerability in jackson-databind involving Deeply nested JsonNode throws StackOverflowError for toString() under CWE-400: Uncontrolled Resource Consumption.
Which jackson-databind versions are affected?
Affected versions include releases prior to 2.14.0 across affected packages: com.fasterxml.jackson.core:jackson-databind.
What version fixes CVE-2026-50193?
Upgrading to 2.14.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jackson-databind affected?
Yes, com.fasterxml.jackson.core:jackson-databind is affected in releases prior to 2.14.0. Upgrade your dependency to 2.14.0 or later.
What is the CVSS score of CVE-2026-50193?
CVE-2026-50193 has a CVSS v3.1 base score of 7.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-50193?
CVE-2026-50193 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Maven dependencies for CVE-2026-50193?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.fasterxml.jackson.core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3wrr-7qpf-2prh",
  "modified" : "2026-07-20T21:19:20Z",
  "published" : "2026-06-23T21:21:12Z",
  "aliases" : [ "CVE-2026-50193" ],
  "summary" : "jackson-databind: Deeply nested JsonNode throws StackOverflowError for toString()",
  "details" : "### Impact\n\nPotential Denial-of-Service when attacker sends deeply nested JSON if (and only if) service:\n\n1. Reads deeply nested (1000s of levels) JSON as `JsonNode` (ObjectMapper.readTree())\n2. Writes out same (or modifided) node using `JsonNode.toString()`\n\nwhich can consume significant amount of resources with concurrent relatively small requests (1000 nested arrays is 2kB).\n\n### Patches\n\nFixed in 2.14.0 via https://github.com/FasterXML/jackson-databind/issues/3447.\n\n### Workarounds\n\nAvoid serializing `JsonNode` using `toString()`: use ObjectMapper.writeValueAsString(node)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.fasterxml.jackson.core:jackson-databind"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.10.0"
      }, {
        "fixed" : "2.14.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.13.5"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-3wrr-7qpf-2prh"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-50193"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FasterXML/jackson-databind/issues/3447"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FasterXML/jackson-databind/commit/a1fa4ae4ecf5cee16da465985f135f3e81816f8c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/FasterXML/jackson-databind"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-23T21:21:12Z",
    "nvd_published_at" : "2026-06-23T21:17:01Z"
  }
}