# 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. - **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`) - **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:** Yes - **Published:** 15 Jul 2026 - **Updated:** 15 Jul 2026 - **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 ## 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 (Missing Release of Memory after Effective Lifetime) ## 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 | Ecosystem | 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 | | `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. ## Is CVE-2026-56375 being exploited? There is no known exploitation of CVE-2026-56375 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-56375 and fix it if it is affected. What it is: 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. Exploitation: There is no known exploitation of CVE-2026-56375 in the wild and no public exploit code. Affected packages and fixed versions: - Magick.NET-Q16-AnyCPU (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-AnyCPU (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-AnyCPU (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-AnyCPU (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-arm64 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-arm64 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-x64 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-x64 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-x86 (NuGet): affected all versions; fixed in 14.11.1 - Magick.NET-Q16-HDRI-x86 (NuGet): affected all versions; fixed in 14.11.1 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-2026-56375/ (Markdown: https://insights.sbomify.com/CVE-2026-56375/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-56375 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-56375 - OSV: https://osv.dev/vulnerability/CVE-2026-56375 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-56375/ Summaries are generated and may contain mistakes; the official description above is the record.