CVE-2026-34238: Magick.NET Q16 AnyCPU ImageMagick Has An Integer Overflow Vulnerability
MODERATECVE-2026-34238 is a MODERATE (CVSS 5.1) imagemagick has an integer overflow vulnerability (CWE-190: Integer Overflow or Wraparound) affecting Magick.NET Q16 AnyCPU libraries in the NuGet ecosystem. The issue involves imagemagick has an integer overflow in despeckle operation causing a heap buffer overflow on 32-bit builds. Remediation is available by upgrading affected packages to version 14.12.0.
CVE-2026-34238 at a Glance
Security Impact
CVSS: 5.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2026-34238
To remediate this vulnerability, upgrade all affected Magick.NET Q16 AnyCPU dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade Magick.NET-Q16-AnyCPU to 14.12.0Upgrade Magick.NET-Q16-HDRI-AnyCPU to 14.12.0Upgrade Magick.NET-Q16-HDRI-x86 to 14.12.0Upgrade Magick.NET-Q16-x86 to 14.12.0Upgrade Magick.NET-Q8-AnyCPU to 14.12.0Upgrade Magick.NET-Q8-x86 to 14.12.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for Magick.NET-Q16-AnyCPUHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-34238, inspect your project dependencies for Magick.NET Q16 AnyCPU:
inspect dependencies for Magick.NET-Q16-AnyCPUAnalyze the terminal output to locate any version of Magick.NET Q16 AnyCPU in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 14.12.0), 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-190: Integer Overflow or Wraparound, where the product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. this occurs when an integer value is incremented to a value that is too large to store in the associated representation. when this occurs, the value may become a very small or negative number. In Magick.NET Q16 AnyCPU, 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
CVE-2026-34238 Affected Magick.NET Q16 AnyCPU Versions
6 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
Magick.NET-Q16-AnyCPU
|
NuGet |
< 14.12.0
|
14.12.0
|
|
Magick.NET-Q16-HDRI-AnyCPU
|
NuGet |
< 14.12.0
|
14.12.0
|
|
Magick.NET-Q16-HDRI-x86
|
NuGet |
< 14.12.0
|
14.12.0
|
|
Magick.NET-Q16-x86
|
NuGet |
< 14.12.0
|
14.12.0
|
|
Magick.NET-Q8-AnyCPU
|
NuGet |
< 14.12.0
|
14.12.0
|
|
Magick.NET-Q8-x86
|
NuGet |
< 14.12.0
|
14.12.0
|
References
Frequently Asked Questions
What is CVE-2026-34238?
Which Magick.NET Q16 AnyCPU versions are affected?
What version fixes CVE-2026-34238?
Is Magick.NET-Q16-AnyCPU affected?
Is Magick.NET-Q16-HDRI-AnyCPU affected?
What is the CVSS score of CVE-2026-34238?
What CWE is associated with CVE-2026-34238?
How can I check NuGet dependencies for CVE-2026-34238?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-26qp-ffjh-2x4v",
"modified" : "2026-04-24T20:47:58Z",
"published" : "2026-04-13T19:10:03Z",
"aliases" : [ "CVE-2026-34238" ],
"summary" : "ImageMagick has an integer overflow in despeckle operation causing a heap buffer overflow on 32-bit builds",
"details" : "An integer overflow in the despeckle operation causes a heap buffer overflow on 32-bit builds that will result in an out of bounds write.\n\n```\n==1551685==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xea2fb818 at pc 0x56cbc42a bp 0xffc4ce48 sp 0xffc4ce38\nWRITE of size 8 at 0xea2fb818 thread T0\n```",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "NuGet",
"name" : "Magick.NET-Q16-AnyCPU"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "14.12.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Magick.NET-Q16-HDRI-AnyCPU"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "14.12.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Magick.NET-Q16-HDRI-x86"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "14.12.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Magick.NET-Q16-x86"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "14.12.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Magick.NET-Q8-AnyCPU"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "14.12.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Magick.NET-Q8-x86"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "14.12.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-26qp-ffjh-2x4v"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34238"
}, {
"type" : "WEB",
"url" : "https://github.com/ImageMagick/ImageMagick/commit/bcd8519c70ecd9ebbc180920f2cf97b267d1f440"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/ImageMagick/ImageMagick"
}, {
"type" : "WEB",
"url" : "https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19"
}, {
"type" : "WEB",
"url" : "https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-190", "CWE-787" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-04-13T19:10:03Z",
"nvd_published_at" : "2026-04-13T22:16:29Z"
}
}