Denial of Service Vulnerability in AutoMapper by LuckyPennySoftware
CVE-2026-32933

7.5HIGH

Key Information:

Vendor

Luckypennysoftware

Status
Automapper
Vendor
CVE Published:
20 March 2026

What is CVE-2026-32933?

AutoMapper, a popular object-object mapping library for .NET, contains a vulnerability that allows attackers to exploit its recursive mapping feature. In versions prior to 15.1.1 and 16.1.1, the library fails to enforce a maximum depth for recursively mapped object graphs. This limitation leaves applications vulnerable to crafted object graphs that can exhaust thread stack memory, resulting in StackOverflowExceptions and application crashes. Users are encouraged to upgrade to the fixed versions to secure their applications against this potential attack.

Affected Version(s)

AutoMapper >= 16.0.0, < 16.1.1 < 16.0.0, 16.1.1

AutoMapper < 15.1.1 < 15.1.1

References

https://github.com/LuckyPennySoftware/AutoMapper/security...
x_refsource_CONFIRM
https://github.com/LuckyPennySoftware/AutoMapper/commit/0...
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https://github.com/LuckyPennySoftware/AutoMapper/releases...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.