5.7

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2026-25797

CVE-2026-25797: ImageMagick: Code Injection via PostScript header in ps coders

The ps encoders, responsible for writing PostScript files, fails to sanitize the input before writing it into the PostScript header. An attacker can provide a malicious file and inject arbitrary PostScript code. When the resulting file is processed by a printer or a viewer (like Ghostscript), the injected code is interpreted and executed.

The html encoder does not properly escape strings that are written to in the html document. An attacker can provide a malicious file and injection arbitrary html code.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2026-25797

CVE-2026-25797:

5.7

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
Magick.NET-Q16-AnyCPU	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-AnyCPU	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-OpenMP-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-OpenMP-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-HDRI-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-OpenMP-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-OpenMP-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-AnyCPU	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-OpenMP-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-OpenMP-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-arm64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-x64	nuget	< 14.10.3	14.10.3
Magick.NET-Q8-x86	nuget	< 14.10.3	14.10.3
Magick.NET-Q16-OpenMP-arm64	nuget	< 14.10.3	14.10.3

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability exists in the PostScript (PS, PS2, PS3) encoders within ImageMagick. The functions WritePSImage, WritePS2Image, and WritePS3Image were identified as vulnerable. These functions are responsible for generating PostScript output. The root cause of the vulnerability was the lack of input sanitization on the filename when it was used to create the '%%Title' field in the PostScript document header. An attacker could provide a specially crafted filename containing malicious PostScript commands. When the ImageMagick encoder processed this file, it would embed the unsanitized filename directly into the output file's header. A PostScript viewer or printer processing this malicious file would then execute the injected code. The patch introduces a new sanitization function, FilenameToTitle, which is now used to clean the filename before it is written to the PostScript header, thus mitigating the code injection vulnerability.

Vulnerable functions

WritePSImage

coders/ps.c

The function `WritePSImage` was vulnerable to code injection because it used the unsanitized `image->filename` property directly in the PostScript header's 'Title' field. An attacker could craft a filename with malicious PostScript code, which would then be executed by a PostScript interpreter.

WritePS2Image

coders/ps2.c

The function `WritePS2Image` was vulnerable to code injection because it used the unsanitized `image->filename` property directly in the PostScript header's 'Title' field. An attacker could craft a filename with malicious PostScript code, which would then be executed by a PostScript interpreter.

WritePS3Image

coders/ps3.c

The function `WritePS3Image` was vulnerable to code injection because it used the unsanitized `image->filename` property directly in the PostScript header's 'Title' field. An attacker could craft a filename with malicious PostScript code, which would then be executed by a PostScript interpreter.

Vulnerability Intelligence
Miggo AI

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WAF Protection Rules

WAF Rule

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Reasoning

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