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 increments type depth only after creating the destination, so recursive mapping performed through constructor parameters occurs before MaxDepth is counted. Destinations built through positional records or other constructors, and recursive ConstructUsing mappings that call context.Mapper, can therefore bypass explicit MaxDepth values and the default limit of 64. Deep attacker-influenced input can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.
Published: 2026-11-13
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-6vhm-j9h7-f9gh AutoMapper: Uncontrolled Recursion with Constructor Parameters
History

Fri, 13 Nov 2026 22:45:00 +0000

Type Values Removed Values Added
First Time appeared Luckypennysoftware
Luckypennysoftware automapper
Vendors & Products Luckypennysoftware
Luckypennysoftware automapper

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 increments type depth only after creating the destination, so recursive mapping performed through constructor parameters occurs before MaxDepth is counted. Destinations built through positional records or other constructors, and recursive ConstructUsing mappings that call context.Mapper, can therefore bypass explicit MaxDepth values and the default limit of 64. Deep attacker-influenced input can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.
Title AutoMapper: Uncontrolled Recursion with Constructor Parameters
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'}


Subscriptions

Luckypennysoftware Automapper
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-13T21:17:15.616Z

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

Link: CVE-2026-128082

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-13T19:19:30.743

Modified: 2026-11-13T22:17:22.843

Link: CVE-2026-128082

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-13T22:30:07Z

Weaknesses