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CVE-2026-32933

Vulnerability in AutoMapper (CVE-2026-32933)

Summary

vulnerability in AutoMapper (CVE-2026-32933). Risk of unauthorized operations or information disclosure. Exploitable via ``StackOverflowException``. Mitigation: upgrade to `15.1.1` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-32933** has been found in AutoMapper. Attackers can target a specific entry point like ``StackOverflowException`` over the network to misuse the product. Risk of unauthorized operations or information disclosure. CVSS score: ?/10. What to do: upgrade AutoMapper to **15.1.1** or later. If unsure, ask your IT team or search "AutoMapper CVE-2026-32933" on the vendor's site.
CVE-2026-32933 (AutoMapper) — CWE-674 / Attack vector: remote (network-reachable) / unauthenticated / no user interaction Attack surface: `StackOverflowException` / `MaxDepth` Patched: `15.1.1` — apply immediately Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs. Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-674) exists in AutoMapper. Attackers reach the vulnerable code path via ``StackOverflowException`` without authentication.
📍 Affected scope
AutoMapper — . Attack surface: `StackOverflowException` / `MaxDepth`.
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **15.1.1**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'AutoMapper' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response Actions (7 steps)

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'AutoMapper' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `AutoMapper` を grep し、稼働しているサービス・バージョンを把握する。

  2. 6
    Apply patch patch 
    Upgrade AutoMapper to 15.1.1

    ステージング環境で 15.1.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。

  3. 7
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。

Affected packages

nuget AutoMapper
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.1.1"}]}]

References

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