CVE-2026-61861

LOW

ImageMagick: Use-After-Free in FormatMagickCaption when memory allocation fails

Published July 24, 2026Updated July 24, 2026Source: osv

Summary

When a memory allocation fails inside the FormatMagickCaption method a dangling pointer still points to the freed memory.

Remediation

Upgrade to the fixed version using your package manager.

NuGet

Update Magick.NET-Q16-OpenMP-x64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-OpenMP-x64 --version 14.15.0

NuGet

Update Magick.NET-Q8-x86 to 14.15.0 or later

dotnet add package Magick.NET-Q8-x86 --version 14.15.0

NuGet

Update Magick.NET-Q16-OpenMP-arm64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-OpenMP-arm64 --version 14.15.0

NuGet

Update Magick.NET-Q16-HDRI-AnyCPU to 14.15.0 or later

dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.15.0

NuGet

Update Magick.NET-Q8-OpenMP-arm64 to 14.15.0 or later

dotnet add package Magick.NET-Q8-OpenMP-arm64 --version 14.15.0

NuGet

Update Magick.NET-Q16-HDRI-arm64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.15.0

NuGet

Update Magick.NET-Q16-HDRI-x86 to 14.15.0 or later

dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.15.0

NuGet

Update Magick.NET-Q8-OpenMP-x64 to 14.15.0 or later

dotnet add package Magick.NET-Q8-OpenMP-x64 --version 14.15.0

NuGet

Update Magick.NET-Q8-arm64 to 14.15.0 or later

dotnet add package Magick.NET-Q8-arm64 --version 14.15.0

NuGet

Update Magick.NET-Q16-x64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-x64 --version 14.15.0

NuGet

Update Magick.NET-Q16-x86 to 14.15.0 or later

dotnet add package Magick.NET-Q16-x86 --version 14.15.0

NuGet

Update Magick.NET-Q8-AnyCPU to 14.15.0 or later

dotnet add package Magick.NET-Q8-AnyCPU --version 14.15.0

NuGet

Update Magick.NET-Q16-HDRI-x64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.15.0

NuGet

Update Magick.NET-Q16-AnyCPU to 14.15.0 or later

dotnet add package Magick.NET-Q16-AnyCPU --version 14.15.0

NuGet

Update Magick.NET-Q16-arm64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-arm64 --version 14.15.0

NuGet

Update Magick.NET-Q8-x64 to 14.15.0 or later

dotnet add package Magick.NET-Q8-x64 --version 14.15.0

NuGet

Update Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.15.0 or later

dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.15.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (17)

Package	Ecosystem	Affected	Fixed In
Magick.NET-Q16-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+110 more)	14.15.0
Magick.NET-Q8-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+229 more)	14.15.0
Magick.NET-Q16-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+58 more)	14.15.0
Magick.NET-Q16-HDRI-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+210 more)	14.15.0
Magick.NET-Q8-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+58 more)	14.15.0
Magick.NET-Q16-HDRI-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+58 more)	14.15.0
Magick.NET-Q16-HDRI-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+210 more)	14.15.0
Magick.NET-Q8-OpenMP-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+110 more)	14.15.0
Magick.NET-Q8-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+58 more)	14.15.0
Magick.NET-Q16-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+229 more)	14.15.0
Magick.NET-Q16-x86	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+229 more)	14.15.0
Magick.NET-Q8-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+213 more)	14.15.0
Magick.NET-Q16-HDRI-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+210 more)	14.15.0
Magick.NET-Q16-AnyCPU	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+213 more)	14.15.0
Magick.NET-Q16-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+58 more)	14.15.0
Magick.NET-Q8-x64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+229 more)	14.15.0
Magick.NET-Q16-HDRI-OpenMP-arm64	nuget	10.0.0, 10.1.0, 11.0.0, 11.1.0 (+58 more)	14.15.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-416
Use After FreeMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 3.7 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References

Frequently Asked Questions

What is CVE-2026-61861?: ImageMagick: Use-After-Free in FormatMagickCaption when memory allocation fails This vulnerability has been assigned a severity rating of LOW (CVSS score: 3.7/10).
How do I check if my project is affected by CVE-2026-61861?: CVE-2026-61861 affects Magick.NET-Q16-OpenMP-x64, Magick.NET-Q8-x86 and Magick.NET-Q16-OpenMP-arm64 (and 14 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-61861 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

3.7

Exploitation is difficult or impact is minor. Address in your next planned update.

Also Known As

GHSA-qvxh-prvr-85w2

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