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Public proof of conceptFix available

CVE-2026-32933

A public proof of concept exists; no exploitation attested.

  • Published2026-03-20
  • Fixed in16.1.1 · 15.1.1
  • WeaknessCWE-674

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-03-2003:16CVE publishedNVD

Versions per branch

NVD · OSV
Luckypennysoftware automapper
BranchAffectedFixed in
16.x≥ 16.0.0, < 16.1.116.1.1
15.1< 15.1.115.1.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • LuckyPennySoftware AutoMapper
    Affected
    • = >= 16.0.0, < 16.1.1no fix stated
    • = < 15.1.1no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-03-20

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • AutoMapperEcho:NuGetall versions · fixed in 8.1.1+echo.1
  • AutoMapperEcho:NuGetfrom 13.0.1 · fixed in 13.0.1+echo.1
  • promitorWolfiall versions · fixed in 2.16.0-r0
  • promitorChainguardall versions · fixed in 2.16.0-r0

Full record on NVD

Fix

  1. Update Luckypennysoftware automapper to 16.1.1 · 15.1.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-03-20
  • CNACVSS 3.17.5known since 2026-10-23
  • CNAweakness (CWE)CWE-674known since 2026-10-23
  • FIRST EPSSEPSS score0.6 %2026-11-12
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2026-03-13

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-03-20
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-rvv3-g6hj-g44x

Frequently asked questions

What is CVE-2026-32933?

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.

Is CVE-2026-32933 actively exploited?

A proof-of-concept exploit exists for CVE-2026-32933, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-32933?

CVE-2026-32933 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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