CVE-2026-33908 ImageMagick is vulnerable to Stack Overflow in DestroyXMLTree()
Attackers can cause a denial of service by providing deeply nested XML files that exhaust stack memory during processing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33908?
CVE-2026-33908 is a high-severity denial of service vulnerability in Imagemagick Imagemagick, published on 13 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, Magick frees the memory of the XML tree via the `DestroyXMLTree()` function; however, this process is executed recursively with no depth limit imposed. When Magick processes an XML file with deeply nested structures, it will exhaust the stack memory, resulting in a Denial of Service (DoS) attack. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
Which versions are affected by CVE-2026-33908?
34 open source packages ship an affected version, including Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU and Magick.NET-Q16-HDRI-OpenMP-arm64. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Magick.NET-Q16-AnyCPU NuGet | All versions | 14.12.0 |
Magick.NET-Q16-AnyCPU NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-AnyCPU NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-AnyCPU NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-OpenMP-arm64 NuGet | All versions | 14.12.0 |
28 more packages
Magick.NET-Q16-HDRI-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-x86 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-HDRI-x86 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-OpenMP-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-OpenMP-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-OpenMP-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-OpenMP-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-x86 NuGet | All versions | 14.12.0 |
Magick.NET-Q16-x86 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-AnyCPU NuGet | All versions | 14.12.0 |
Magick.NET-Q8-AnyCPU NuGet | All versions | 14.12.0 |
Magick.NET-Q8-OpenMP-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-OpenMP-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-OpenMP-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-OpenMP-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-arm64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-x64 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-x86 NuGet | All versions | 14.12.0 |
Magick.NET-Q8-x86 NuGet | All versions | 14.12.0 |
Products include Imagemagick Imagemagick.
How do I fix CVE-2026-33908?
Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 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-2026-33908 being exploited?
There is no known exploitation of CVE-2026-33908 in the wild and no public exploit code.
Other vulnerabilities in Imagemagick Imagemagick
Sources
Also known as DEBIAN-CVE-2026-33908, ECHO-b546-8214-98a0, GHSA-fwvm-ggf6-2p4x, JLSEC-2026-998, MINI-7p6j-cxcv-6xj2, UBUNTU-CVE-2026-33908.