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ImageMagick has a Path Policy TOCTOU symlink race bypass

Moderate severity GitHub Reviewed Published Mar 9, 2026 in ImageMagick/ImageMagick • Updated Mar 10, 2026

Package

nuget Magick.NET-Q16-AnyCPU (NuGet)

Affected versions

< 14.10.4

Patched versions

14.10.4
nuget Magick.NET-Q16-HDRI-AnyCPU (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-OpenMP-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-HDRI-x86 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-OpenMP-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-OpenMP-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-OpenMP-x86 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q16-x86 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-AnyCPU (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-OpenMP-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-OpenMP-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-arm64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-x64 (NuGet)
< 14.10.4
14.10.4
nuget Magick.NET-Q8-x86 (NuGet)
< 14.10.4
14.10.4

Description

domain="path" authorization is checked before final file open/use. A symlink swap between check-time and use-time bypasses policy-denied read/write.

References

@dlemstra dlemstra published to ImageMagick/ImageMagick Mar 9, 2026
Published by the National Vulnerability Database Mar 10, 2026
Published to the GitHub Advisory Database Mar 10, 2026
Reviewed Mar 10, 2026
Last updated Mar 10, 2026

Severity

Moderate

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

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

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(1st percentile)

Weaknesses

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Learn more on MITRE.

CVE ID

CVE-2026-28689

GHSA ID

GHSA-493f-jh8w-qhx3

Source code

Credits

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