# GHSA-98cp-rj9f-6v5g: ImageMagick has has a stack-buffer-overflow in MNG encoder with oversized pallete > A stack buffer overflow in ImageMagick's MNG encoder allows attackers to execute arbitrary code or cause denial of service via crafted multi-frame images. - **Severity:** Not scored - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 14 Apr 2026 ## What is GHSA-98cp-rj9f-6v5g? GHSA-98cp-rj9f-6v5g is a memory corruption vulnerability in Magick.NET-Q16-AnyCPU, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official description The patch for GHSA-7h7q-j33q-hvpf was incomplete and still allows a stack buffer overflow for the multi frame images. ## Which versions are affected by GHSA-98cp-rj9f-6v5g? 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 | 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-OpenMP-x64` | NuGet | All versions | 14.12.0 | | `Magick.NET-Q16-HDRI-OpenMP-x64` | 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 | ## How do I fix GHSA-98cp-rj9f-6v5g? Upgrade Magick.NET-Q16-AnyCPU to 14.12.0 or later. ## Is GHSA-98cp-rj9f-6v5g being exploited? There is no known exploitation of GHSA-98cp-rj9f-6v5g in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for GHSA-98cp-rj9f-6v5g and fix it if it is affected. What it is: GHSA-98cp-rj9f-6v5g is a memory corruption vulnerability in Magick.NET-Q16-AnyCPU, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of GHSA-98cp-rj9f-6v5g 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-OpenMP-x64 (NuGet): affected all versions; fixed in 14.12.0 - Magick.NET-Q16-HDRI-OpenMP-x64 (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 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/GHSA-98cp-rj9f-6v5g/ (Markdown: https://insights.sbomify.com/GHSA-98cp-rj9f-6v5g/index.md) ``` ## Sources - OSV: https://osv.dev/vulnerability/GHSA-98cp-rj9f-6v5g --- From sbomify Insights: https://insights.sbomify.com/GHSA-98cp-rj9f-6v5g/ Summaries are generated and may contain mistakes; the official description above is the record.