CVE-2026-56366 low CVSS 3.3

Vulnerability in Magick.NET-Q16-AnyCPU (CVE-2026-56366)

Summary

Vulnerability in Magick.NET-Q16-AnyCPU (CVE-2026-56366). Risk of unauthorized operations or information disclosure. Exploitable via APP1JPEG. Mitigation: upgrade to 14.11.1 or later.

Original description

The description as published by the source.

ImageMagick contains a memory leak in the META reader when processing the APP1JPEG input path.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A weakness called CVE-2026-56366 was discovered in Magick.NET-Q16-AnyCPU.
Severity is Low (CVSS 3.3/10). Real-world exploitation is unlikely but a fix is still recommended.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "Magick.NET-Q16-AnyCPU CVE-2026-56366".

CVE-2026-56366 (Magick.NET-Q16-AnyCPU). Severity: Low / CVSSv3 3.3. Category: CWE-401.
Response plan:

Check the vendor advisory for affected versions and the patched release.
If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.

❓ What is the problem

A weakness (CVE-2026-56366) in Magick.NET-Q16-AnyCPU. A serious software flaw has been identified.

📍 Affected scope

Target versions of Magick.NET-Q16-AnyCPU (see vendor advisory). If running in production, identify exposure immediately.

🔥 Severity

Severity: Low (CVSS 3.3/10). Real-world exploitation is unlikely but a fix is still recommended.

🔧 How to fix

Update to the patched release as listed in the vendor advisory. (Typical mitigation pattern for CWE-401)

🛡️ Workaround

If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.

🔍 Detection

Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.

Response actions

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

1
Identify exposure identify
```
grep -r 'dos' . | 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 dos を grep し、稼働しているサービス・バージョンを把握する。
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。