Answer in brief
CVE-2026-56376 records a Low severity (CVSS 3.7) vulnerability in ImageMagick has a possible heap Use After Free vulnerability in its meta coder. The current sources do not mark it as known exploited. The current feed maps Magick.NET-Q16-AnyCPU (nuget), Magick.NET-Q16-arm64 (nuget), Magick.NET-Q16-HDRI-AnyCPU (nuget), Magick.NET-Q16-HDRI-arm64 (nuget) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Magick.NET-Q16-AnyCPU (nuget), Magick.NET-Q16-arm64 (nuget), Magick.NET-Q16-HDRI-AnyCPU (nuget), Magick.NET-Q16-HDRI-arm64 (nuget) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Magick.NET-Q16-AnyCPUnuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-arm64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-HDRI-AnyCPUnuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-HDRI-arm64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-HDRI-OpenMP-arm64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-HDRI-OpenMP-x64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-HDRI-x64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-HDRI-x86nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-OpenMP-arm64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-OpenMP-x64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q16-OpenMP-x86nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q8-AnyCPUnuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q8-arm64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q8-OpenMP-arm64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q8-OpenMP-x64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q8-x64nuget | <14.10.3 | 14.10.3 |
| Magick.NET-Q8-x86nuget | <14.10.3 | 14.10.3 |
Published upstream
Feb 25, 2026
Evidence: source:ghsa:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:ghsa:source_dates:source-dates:recordFirst seen by HOL
Jun 23, 2026
A heap Use After Free vulnerability exists in the meta coder when an allocation fails and a single byte is written to a stale pointer. ``` ==535852==ERROR: AddressSanitizer: heap-use-after-free on address 0x5210000088ff at pc 0x5581bacac14d bp 0x7ffdf667edf0 sp 0x7ffdf667ede0 WRITE of size 1 at 0x5210000088ff thread T0 ```
Quoted source text, attributed separately from HOL analysis.