CVE-2026-50193
Received Received - Intake
Denial-of-Service in Jackson Databind via Deeply Nested JSON

Publication date: 2026-06-23

Last updated on: 2026-06-23

Assigner: GitHub, Inc.

Description
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.13.0 until 2.14.0, a potential Denial-of-Service exists when attacker sends deeply nested JSON if (and only if) the service reads deeply nested (1000s of levels) JSON as JsonNode (ObjectMapper.readTree()) and writes out same (or modifided) node using JsonNode.toString(). This can consume significant amount of resources with concurrent relatively small requests (1000 nested arrays is 2kB). This vulnerability is fixed in 2.14.0.
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Meta Information
Published
2026-06-23
Last Modified
2026-06-23
Generated
2026-06-24
AI Q&A
2026-06-24
EPSS Evaluated
N/A
NVD
CVE-2026-50193
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
jackson jackson-databind From 2.13.0 (inc) to 2.14.0 (exc)
jackson jackson-databind 2.14.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
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Executive Summary

The vulnerability exists in jackson-databind versions from 2.13.0 until 2.14.0. It occurs when an attacker sends deeply nested JSON data (thousands of levels) that is read as a JsonNode using ObjectMapper.readTree() and then written out using JsonNode.toString(). This process can consume a significant amount of system resources even with relatively small requests, potentially leading to a Denial-of-Service (DoS) condition.

Impact Analysis

This vulnerability can impact you by causing a Denial-of-Service (DoS) condition. When an attacker sends deeply nested JSON data, the system may consume excessive resources processing these requests, which can degrade performance or make the service unavailable to legitimate users.

Mitigation Strategies

To mitigate this vulnerability, upgrade jackson-databind to version 2.14.0 or later, where the issue is fixed.

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