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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-128081

AutoMapper: Denial of Service via uncontrolled recursion that bypasses MaxDepth

No exploitation reported by the sources we read.

  • Published2026-11-13
  • Fixed in16.3.0 · 15.1.4
  • 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. Prior to 15.1.4 and from 16.0.0 until 16.3.0, AutoMapper can recurse without an effective MaxDepth limit when mapping polymorphic graphs through Include or IncludeBase, runtime-typed object or interface members, nested Dictionary<string, object> or ExpandoObject sources, or recursive ConvertUsing type converters. Deep attacker-influenced graphs on these paths can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.

Timeline

dates in UTC
  1. 2026-11-1318:35CVE publishedCNA

Versions per branch

OSV
AutoMapper
BranchAffectedFixed in
16.x≥ 16.0.0, < 16.3.016.3.0
15.1< 15.1.415.1.4

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, < 16.3.0no fix stated
    • = < 15.1.4no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-13

Fix

  1. Update AutoMapper to 16.3.0 · 15.1.4

Detection

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

Sources

  • CNACVSS 3.17.52026-11-13
  • CNAweakness (CWE)CWE-6742026-11-13
  • NVDweakness (CWE)CWE-674read 2026-11-13
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2026-11-13

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
2026-11-13
Last Modified
2026-11-13
NVD status
Received
GitHub Advisory
GHSA-gpwp-5797-mjff

Frequently asked questions

What is CVE-2026-128081?

AutoMapper is a convention-based object-object mapper in .NET. Prior to 15.1.4 and from 16.0.0 until 16.3.0, AutoMapper can recurse without an effective MaxDepth limit when mapping polymorphic graphs through Include or IncludeBase, runtime-typed object or interface members, nested Dictionary<string, object> or ExpandoObject sources, or recursive ConvertUsing type converters. Deep attacker-influenced graphs on these paths can throw an uncatchable StackOverflowException and terminate the process. This issue is fixed in versions 15.1.4 and 16.3.0.

Is CVE-2026-128081 actively exploited?

Active exploitation of CVE-2026-128081 has not been confirmed.

What is the CVSS score for CVE-2026-128081?

CVE-2026-128081 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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