CVE-2026-32933Public exploitNetwork attack vector

Application crash via unbounded recursive mapping

Published Mar 20, 2026 · Updated Mar 20, 2026

Uncontrolled recursion in Lucky Penny Software AutoMapper before 15.1.1 and 16.0.0 through 16.1.0 allows remote attackers to crash applications. The core mapping engine follows self-referential or cyclic type paths without a default MaxDepth, exhausting the .NET thread stack until StackOverflowException terminates the process. Reachability requires an application to pass an attacker-controlled deeply nested object graph into an affected mapping path; the bounded consequence is an application-process crash.

CVSS severity7.5
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Uncontrolled recursion in Lucky Penny Software AutoMapper before 15.1.1 and 16.0.0 through 16.1.0 allows remote attackers to crash applications. The core mapping engine follows self-referential or cyclic type paths without a default MaxDepth, exhausting the .NET thread stack until StackOverflowException terminates the process. Reachability requires an application to pass an attacker-controlled deeply nested object graph into an affected mapping path; the bounded consequence is an application-process crash.

The record

CVE
CVE-2026-32933
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Lucky Penny Software
Product
AutoMapper
Classifications
CWE-674, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 15.1.1
  2. Affected versionversion=>= 16.0.0, < 16.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lucky Penny Software · AutoMapperversion=< 15.1.1; version=>= 16.0.0, < 16.1.1

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo