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ImageMagick has a memory leak in PNG encoder when writing a MNG image

Low severity GitHub Reviewed Published Apr 13, 2026 in ImageMagick/ImageMagick • Updated Apr 16, 2026

Package

nuget Magick.NET-Q16-AnyCPU (NuGet)

Affected versions

< 14.12.0

Patched versions

14.12.0
nuget Magick.NET-Q16-HDRI-AnyCPU (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-x86 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-OpenMP-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-OpenMP-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q16-x86 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-AnyCPU (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-OpenMP-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-OpenMP-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-arm64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-x64 (NuGet)
< 14.12.0
14.12.0
nuget Magick.NET-Q8-x86 (NuGet)
< 14.12.0
14.12.0

Description

When the PNG encoder fails to write an MNG image it can leak memory.

References

@dlemstra dlemstra published to ImageMagick/ImageMagick Apr 13, 2026
Published to the GitHub Advisory Database Apr 14, 2026
Reviewed Apr 14, 2026
Last updated Apr 16, 2026

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

Weaknesses

Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. Learn more on MITRE.

CVE ID

No known CVE

GHSA ID

GHSA-x928-4434-crqj

Source code

Credits

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