What’s Vulnerable › Vulnerabilities

CVE-2026-32933: AutoMapper Vulnerable to Denial of Service (DoS) via Uncontrolled Recursion

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-20 · updated 2026-06-17
• Weakness: CWE-674

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.

Affected products

• LuckyPennySoftware AutoMapper: before 15.1.1; from 16.0.0 before 16.1.1 — fixed in 15.1.1, 16.1.1

How to fix

Upgrade to a fixed version: LuckyPennySoftware AutoMapper 15.1.1, 16.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/LuckyPennySoftware/AutoMapper/commit/0afaf1e91648fca1a57512e94dd00a76ee016816
• https://github.com/LuckyPennySoftware/AutoMapper/releases/tag/v15.1.1
• https://github.com/LuckyPennySoftware/AutoMapper/releases/tag/v16.1.1
• https://github.com/LuckyPennySoftware/AutoMapper/security/advisories/GHSA-rvv3-g6hj-g44x

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