What is GHSA-h22j-f9xw-xjjm?

GHSA-h22j-f9xw-xjjm is a security advisory published by GitHub Security Advisories with Medium severity. ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds

Which CVE IDs does GHSA-h22j-f9xw-xjjm cover?

GHSA-h22j-f9xw-xjjm covers the following CVE IDs: CVE-2026-62946. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h22j-f9xw-xjjm?

GHSA-h22j-f9xw-xjjm has a CVSS v3 base score of 5.1, published by GitHub Security Advisories.

Which products are affected by GHSA-h22j-f9xw-xjjm?

GHSA-h22j-f9xw-xjjm affects 6 products, including: nuget/Magick.NET-Q16-AnyCPU:\u003c 14.15.0; nuget/Magick.NET-Q16-HDRI-AnyCPU:\u003c 14.15.0; nuget/Magick.NET-Q16-HDRI-x86:\u003c 14.15.0; nuget/Magick.NET-Q16-x86:\u003c 14.15.0; nuget/Magick.NET-Q8-AnyCPU:\u003c 14.15.0; and others — see the full list on the advisory page.

GHSA-h22j-f9xw-xjjmMediumCVSS 5.1

ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds

Vendor

GitHub Security Advisories

Published

July 24, 2026

Last Modified

July 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-62946 →

📋 Description

When processing an extremely large JNX file on 32-bit platforms an integer overflow will happen that can cause a heap buffer over-write.

🎯 Affected products6

nuget/Magick.NET-Q16-AnyCPU:< 14.15.0
nuget/Magick.NET-Q16-HDRI-AnyCPU:< 14.15.0
nuget/Magick.NET-Q16-HDRI-x86:< 14.15.0
nuget/Magick.NET-Q16-x86:< 14.15.0
nuget/Magick.NET-Q8-AnyCPU:< 14.15.0
nuget/Magick.NET-Q8-x86:< 14.15.0

🔗 References (3)

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-h22j-f9xw-xjjm
https://github.com/dlemstra/Magick.NET/releases/tag/14.15.0
https://github.com/advisories/GHSA-h22j-f9xw-xjjm