CVE-2026-56375 ImageMagick - Memory Leak in ASHLAR Coder Action Failure
Attackers can cause a denial of service by triggering memory leaks in the ASHLAR coder when actions fail.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-56375?
CVE-2026-56375 is a medium-severity denial of service vulnerability in ImageMagick, published on 15 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
ImageMagick through 7.1.2-18 contains a memory leak vulnerability in the ASHLAR coder when an action fails. Attackers can trigger failed actions to exhaust memory resources and cause denial of service.
Weakness: CWE-401
Which versions are affected by CVE-2026-56375?
36 open source packages ship an affected version, including Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU and Magick.NET-Q16-HDRI-OpenMP-arm64.
| Package | Affected | Fixed in |
|---|---|---|
Magick.NET-Q16-AnyCPU NuGet | All versions | 14.11.1 |
Magick.NET-Q16-AnyCPU NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-AnyCPU NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-AnyCPU NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet | All versions | 14.11.1 |
30 more packages
Magick.NET-Q16-HDRI-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-HDRI-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-OpenMP-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-OpenMP-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-OpenMP-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-OpenMP-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-OpenMP-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-OpenMP-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q16-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-AnyCPU NuGet | All versions | 14.11.1 |
Magick.NET-Q8-AnyCPU NuGet | All versions | 14.11.1 |
Magick.NET-Q8-OpenMP-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-OpenMP-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-OpenMP-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-OpenMP-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-arm64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-x64 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-x86 NuGet | All versions | 14.11.1 |
Magick.NET-Q8-x86 NuGet | All versions | 14.11.1 |
How do I fix CVE-2026-56375?
Upgrade Magick.NET-Q16-AnyCPU to 14.11.1 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-56375 being exploited?
There is no known exploitation of CVE-2026-56375 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-56375, ECHO-0e8e-b96f-3bfa, GHSA-6p22-q7w5-33pg, GHSA-xqmc-7954-658r, JLSEC-2026-1056, UBUNTU-CVE-2026-56375.