CVE-2026-32933
High
Description
AutoMapper 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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductLuckypennysoftware Automapper
PublishedMar 20, 2026
First seenMar 20, 2026
Weakness typeCWE-674CWE-674
How to fix
Update
- luckypennysoftware automapper15.1.1, 16.1.1 or later
- AutoMapper16.1.1, 15.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| luckypennysoftware automapper | v < 15.1.1, 16.0.0 ≤ v < 16.1.1 | 15.1.1, 16.1.1 |
| AutoMapperNuGet | 16.0.0 ≤ v < 16.1.1, v < 15.1.1 | 16.1.1, 15.1.1 |
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