AutoMapper Vulnerable to Denial of Service (DoS) via Uncontrolled Recursion

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Summary

CVECVE-2026-32933
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-20 03:16:00 UTC
Updated2026-04-08 20:52:17 UTC
DescriptionAutoMapper is a convention-based object-object mapper in .NET. Versions prior to 15.1.1 and 16.1.1 are vulnerable to a Denial of Service (DoS) attack. When mapping deeply nested object graphs, the library uses recursive method calls without enforcing a default maximum depth limit. This allows an attacker to provide a specially crafted object graph that exhausts the thread's stack memory, triggering a `StackOverflowException` and causing the entire application process to terminate. Versions 15.1.1 and 16.1.1 fix the issue.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-674 | CWE-674 CWE-674: Uncontrolled Recursion

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Luckypennysoftware Automapper All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA LuckyPennySoftware AutoMapper affected >= 16.0.0, < 16.1.1 Not specified
CNA LuckyPennySoftware AutoMapper affected < 15.1.1 Not specified

References

ReferenceSourceLinkTags
github.com/LuckyPennySoftware/AutoMapper/security/advisories/GHSA-rvv3-g... [email protected] github.com Vendor Advisory, Exploit
github.com/LuckyPennySoftware/AutoMapper/commit/0afaf1e91648fca1a57512e9... [email protected] github.com Patch
github.com/LuckyPennySoftware/AutoMapper/releases/tag/v15.1.1 [email protected] github.com Release Notes
github.com/LuckyPennySoftware/AutoMapper/releases/tag/v16.1.1 [email protected] github.com Release Notes
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