AutoMapper is a convention-based object-object mapper in .NET. Prior to 15.1.4 and from 16.0.0 until 16.3.0, AutoMapper can recurse without an effective MaxDepth limit when mapping polymorphic graphs through Include or IncludeBase, runtime-typed object or interface members, nested Dictionary<string, object> or ExpandoObject sources, or recursive ConvertUsing type converters. Deep attacker-influenced graphs on these paths can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-gpwp-5797-mjff AutoMapper: Denial of Service via uncontrolled recursion that bypasses MaxDepth
Fixes

Solution

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Workaround

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History

Fri, 13 Nov 2026 18:45:00 +0000

Type Values Removed Values Added
Description AutoMapper is a convention-based object-object mapper in .NET. Prior to 15.1.4 and from 16.0.0 until 16.3.0, AutoMapper can recurse without an effective MaxDepth limit when mapping polymorphic graphs through Include or IncludeBase, runtime-typed object or interface members, nested Dictionary<string, object> or ExpandoObject sources, or recursive ConvertUsing type converters. Deep attacker-influenced graphs on these paths can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.
Title AutoMapper: Denial of Service via uncontrolled recursion that bypasses MaxDepth
Weaknesses CWE-674
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-13T18:35:45.452Z

Reserved: 2026-11-12T21:24:51.130Z

Link: CVE-2026-128081

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-13T19:19:30.603

Modified: 2026-11-13T19:19:30.603

Link: CVE-2026-128081

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses