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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
LuckyPennySoftware AutoMapper affected
Version Status Constraints
>= 16.0.0, < 16.3.0 affected —
< 15.1.4 affected —

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/LuckyPennySoftware/AutoMapper/commit/4d51a4b8125b4d2302f2f1f455747c9648ad1acb cve-icon
https://github.com/LuckyPennySoftware/AutoMapper/commit/639c2748cb9d3d07df8b86879ba7bcf211675c86 cve-icon
https://github.com/LuckyPennySoftware/AutoMapper/releases/tag/v15.1.4 cve-icon
https://github.com/LuckyPennySoftware/AutoMapper/releases/tag/v16.3.0 cve-icon
https://github.com/LuckyPennySoftware/AutoMapper/security/advisories/GHSA-6vhm-j9h7-f9gh cve-icon
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 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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-13T18:37:30.465Z

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

Link: CVE-2026-128082

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses