# 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. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 13 Apr 2026 - **Updated:** 15 Jul 2026 - **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 ## 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. Weakness: CWE-776 (Improper Restriction of Recursive Entity References in DTDs), CWE-674 (Uncontrolled Recursion) ## 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 | Ecosystem | 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 | | `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: Imagemagick Imagemagick. ## How do I fix CVE-2026-33908? Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 or later. ## 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 - [CVE-2019-19952](https://insights.sbomify.com/CVE-2019-19952/): Use after free in n/a (critical 9.8) - [CVE-2018-16328](https://insights.sbomify.com/CVE-2018-16328/): Null dereference in n/a (critical 9.8) - [CVE-2018-16329](https://insights.sbomify.com/CVE-2018-16329/): Null dereference in n/a (critical 9.8) - [CVE-2017-18210](https://insights.sbomify.com/CVE-2017-18210/): Null dereference in n/a (critical 9.8) - [CVE-2017-14138](https://insights.sbomify.com/CVE-2017-14138/): Denial of service in n/a (critical 9.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-33908 and fix it if it is affected. What it is: 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. Exploitation: There is no known exploitation of CVE-2026-33908 in the wild and no public exploit code. Affected packages and fixed versions: - Magick.NET-Q16-AnyCPU (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-AnyCPU (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-AnyCPU (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-AnyCPU (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-arm64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-arm64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-x64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-x64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-x86 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-x86 (NuGet): affected all versions; fixed in 14.12.0 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2026-33908/ (Markdown: https://insights.sbomify.com/CVE-2026-33908/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33908 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33908 - OSV: https://osv.dev/vulnerability/CVE-2026-33908 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-33908/ Summaries are generated and may contain mistakes; the official description above is the record.