GHSA-56m6-8q75-f2rw: ImageMagick Policy Bypass Due To An Vulnerability

MODERATE
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CVSS 4.7
CWE-367 CWE-59 CWE-863
Published
Advisory Summary

GHSA-56m6-8q75-f2rw is a MODERATE (CVSS 4.7) policy bypass due to an vulnerability (CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition) affecting ImageMagick libraries in the NuGet ecosystem. The issue involves policy bypass due to an incomplete fix of cve-2026-49219. Remediation is available by upgrading affected packages to version 14.15.0.

GHSA-56m6-8q75-f2rw at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-56m6-8q75-f2rw
Severity MODERATE
CVSS v3.1 Base Score 4.7
CWE Classification CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
Affected Product ImageMagick
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 4.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix GHSA-56m6-8q75-f2rw

To remediate this vulnerability, upgrade all affected ImageMagick dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Magick.NET-Q16-AnyCPU fixed: 14.15.0 
Upgrade Magick.NET-Q16-AnyCPU to 14.15.0
Magick.NET-Q16-HDRI-AnyCPU fixed: 14.15.0 
Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.15.0
Magick.NET-Q16-HDRI-OpenMP-arm64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.15.0
Magick.NET-Q16-HDRI-x64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-HDRI-x64 to 14.15.0
Magick.NET-Q16-HDRI-x86 fixed: 14.15.0 
Upgrade Magick.NET-Q16-HDRI-x86 to 14.15.0
Magick.NET-Q16-OpenMP-arm64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-OpenMP-arm64 to 14.15.0
Magick.NET-Q16-OpenMP-x64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-OpenMP-x64 to 14.15.0
Magick.NET-Q16-arm64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-arm64 to 14.15.0
Magick.NET-Q16-x64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-x64 to 14.15.0
Magick.NET-Q16-x86 fixed: 14.15.0 
Upgrade Magick.NET-Q16-x86 to 14.15.0
Magick.NET-Q8-AnyCPU fixed: 14.15.0 
Upgrade Magick.NET-Q8-AnyCPU to 14.15.0
Magick.NET-Q8-OpenMP-arm64 fixed: 14.15.0 
Upgrade Magick.NET-Q8-OpenMP-arm64 to 14.15.0
Magick.NET-Q8-OpenMP-x64 fixed: 14.15.0 
Upgrade Magick.NET-Q8-OpenMP-x64 to 14.15.0
Magick.NET-Q8-arm64 fixed: 14.15.0 
Upgrade Magick.NET-Q8-arm64 to 14.15.0
Magick.NET-Q8-x64 fixed: 14.15.0 
Upgrade Magick.NET-Q8-x64 to 14.15.0
Magick.NET-Q8-x86 fixed: 14.15.0 
Upgrade Magick.NET-Q8-x86 to 14.15.0
Magick.NET-Q16-HDRI-arm64 fixed: 14.15.0 
Upgrade Magick.NET-Q16-HDRI-arm64 to 14.15.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Magick.NET-Q16-AnyCPU

How to Check if You Are Affected

To determine whether your application is affected by GHSA-56m6-8q75-f2rw, inspect your project dependencies for ImageMagick:

inspect dependencies for Magick.NET-Q16-AnyCPU

Analyze the terminal output to locate any version of ImageMagick in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 14.15.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition, where the product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. In ImageMagick, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

An incomplete fix of CVE-2026-49219 could result in a policy bypass.

GHSA-56m6-8q75-f2rw Affected ImageMagick Versions

17 component(s)
Fixed Versions:
14.15.0
Product / Package Ecosystem Affected Versions Fixed Version
Magick.NET-Q16-AnyCPU
nuget/Magick.NET-Q16-AnyCPU
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-HDRI-AnyCPU
nuget/Magick.NET-Q16-HDRI-AnyCPU
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-HDRI-OpenMP-arm64
nuget/Magick.NET-Q16-HDRI-OpenMP-arm64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-HDRI-x64
nuget/Magick.NET-Q16-HDRI-x64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-HDRI-x86
nuget/Magick.NET-Q16-HDRI-x86
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-OpenMP-arm64
nuget/Magick.NET-Q16-OpenMP-arm64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-OpenMP-x64
nuget/Magick.NET-Q16-OpenMP-x64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-arm64
nuget/Magick.NET-Q16-arm64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-x64
nuget/Magick.NET-Q16-x64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-x86
nuget/Magick.NET-Q16-x86
NuGet
< 14.15.0
14.15.0
Magick.NET-Q8-AnyCPU
nuget/Magick.NET-Q8-AnyCPU
NuGet
< 14.15.0
14.15.0
Magick.NET-Q8-OpenMP-arm64
nuget/Magick.NET-Q8-OpenMP-arm64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q8-OpenMP-x64
nuget/Magick.NET-Q8-OpenMP-x64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q8-arm64
nuget/Magick.NET-Q8-arm64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q8-x64
nuget/Magick.NET-Q8-x64
NuGet
< 14.15.0
14.15.0
Magick.NET-Q8-x86
nuget/Magick.NET-Q8-x86
NuGet
< 14.15.0
14.15.0
Magick.NET-Q16-HDRI-arm64
nuget/Magick.NET-Q16-HDRI-arm64
NuGet
< 14.15.0
14.15.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-56m6-8q75-f2rw
ImageMagick Source Repository REPOSITORY
https://github.com/ImageMagick/ImageMagick
ImageMagick Release RELEASE
https://github.com/dlemstra/Magick.NET/releases/tag/14.15.0

Frequently Asked Questions

What is GHSA-56m6-8q75-f2rw?
GHSA-56m6-8q75-f2rw is a security vulnerability in ImageMagick involving Policy Bypass due to an incomplete fix of CVE-2026-49219 under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition.
Which ImageMagick versions are affected?
Affected versions include releases prior to 14.15.0 across affected packages: Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU, Magick.NET-Q16-HDRI-OpenMP-arm64, Magick.NET-Q16-HDRI-x64, Magick.NET-Q16-HDRI-x86, Magick.NET-Q16-OpenMP-arm64, Magick.NET-Q16-OpenMP-x64, Magick.NET-Q16-arm64, Magick.NET-Q16-x64, Magick.NET-Q16-x86, Magick.NET-Q8-AnyCPU, Magick.NET-Q8-OpenMP-arm64, Magick.NET-Q8-OpenMP-x64, Magick.NET-Q8-arm64, Magick.NET-Q8-x64, Magick.NET-Q8-x86, Magick.NET-Q16-HDRI-arm64.
What version fixes GHSA-56m6-8q75-f2rw?
Upgrading to 14.15.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Magick.NET-Q16-AnyCPU affected?
Yes, Magick.NET-Q16-AnyCPU is affected in releases prior to 14.15.0. Upgrade your dependency to 14.15.0 or later.
Is Magick.NET-Q16-HDRI-AnyCPU affected?
Yes, Magick.NET-Q16-HDRI-AnyCPU is affected in releases prior to 14.15.0. Upgrade your dependency to 14.15.0 or later.
What is the CVSS score of GHSA-56m6-8q75-f2rw?
GHSA-56m6-8q75-f2rw has a CVSS v3.1 base score of 4.7 (MODERATE) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with GHSA-56m6-8q75-f2rw?
GHSA-56m6-8q75-f2rw is classified under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.).
How can I check NuGet dependencies for GHSA-56m6-8q75-f2rw?
Run the dependency tree command: 'inspect dependencies for Magick.NET-Q16-AnyCPU'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-56m6-8q75-f2rw",
  "modified" : "2026-07-24T14:08:38Z",
  "published" : "2026-07-24T14:08:37Z",
  "aliases" : [ ],
  "summary" : "ImageMagick: Policy Bypass due to an incomplete fix of CVE-2026-49219",
  "details" : "An incomplete fix of CVE-2026-49219 could result in a policy bypass.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-AnyCPU"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-HDRI-AnyCPU"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-HDRI-OpenMP-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-HDRI-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-HDRI-x86"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-OpenMP-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-OpenMP-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-x86"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-AnyCPU"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-OpenMP-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-OpenMP-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-x64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q8-x86"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Magick.NET-Q16-HDRI-arm64"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "14.15.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-56m6-8q75-f2rw"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ImageMagick/ImageMagick"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dlemstra/Magick.NET/releases/tag/14.15.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-367", "CWE-59", "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-24T14:08:37Z",
    "nvd_published_at" : null
  }
}