5.7

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2026-45359

CVE-2026-45359: ImageMagick: Out-of-Bounds Read in connected components when the user supplies an invalid keep-top define

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-22, an invalid connected-components:keep-top value could result in a heap buffer over-read when performing the connected components operation. This issue has been patched in versions 6.9.13-48 and 7.1.2-22.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-45359

CVE-2026-45359:

5.7

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

SSVC / BOD 26-04 ↗

Exploitation NoneAutomatable NoTech Impact Partial

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Package Name	Ecosystem	Vulnerable Versions	First Patched Version
Magick.NET-Q16-AnyCPU	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-HDRI-AnyCPU	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-HDRI-OpenMP-arm64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-HDRI-OpenMP-x64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-HDRI-arm64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-HDRI-x64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-HDRI-x86	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-OpenMP-arm64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-OpenMP-x64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-arm64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-x64	nuget	< 14.13.1	14.13.1
Magick.NET-Q16-x86	nuget	< 14.13.1	14.13.1
Magick.NET-Q8-AnyCPU	nuget	< 14.13.1	14.13.1
Magick.NET-Q8-OpenMP-arm64	nuget	< 14.13.1	14.13.1
Magick.NET-Q8-OpenMP-x64	nuget	< 14.13.1	14.13.1
Magick.NET-Q8-arm64	nuget	< 14.13.1	14.13.1
Magick.NET-Q8-x64	nuget	< 14.13.1	14.13.1
Magick.NET-Q8-x86	nuget	< 14.13.1	14.13.1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability exists in the ConnectedComponentsImage function located in MagickCore/vision.c. The root cause is the improper validation of the connected-components:keep-top artifact value, which is read from user input. This value is converted to a signed integer top_ids. Before the patch, there were no checks to ensure that top_ids was within the bounds of the allocated memory for top_objects. A malicious user could supply a value that, when converted, would result in a large positive or negative number, leading to a heap buffer over-read. The security patch introduces checks to clamp the value of top_ids between 0 and component_image->colors - 1, effectively preventing the out-of-bounds read. Therefore, any runtime profile during the exploitation of this vulnerability would show the ConnectedComponentsImage function in the call stack.

Vulnerable functions

ConnectedComponentsImage

MagickCore/vision.c

The function `ConnectedComponentsImage` is vulnerable to an out-of-bounds read. The `top_ids` variable is derived from a user-controlled string (`artifact`) without proper validation. An attacker can provide a malicious `connected-components:keep-top` value, causing `top_ids` to be a large or negative value. This could lead to a heap buffer over-read when `top_objects` is accessed later in the function. The patch mitigates this by adding boundary checks to ensure `top_ids` is within a valid range.

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WAF Rule

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Reasoning

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