# ImageMagick: Heap Buffer Over-Read in XCF decoder due to integer conversion overflow

Advisory record · `GHSA-pjxj-pchx-4c3m`

- **Identifiers:** `GHSA-pjxj-pchx-4c3m` · `CVE-2026-53466`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-190](https://cwe.mitre.org/data/definitions/190.html) · [CWE-681](https://cwe.mitre.org/data/definitions/681.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) · [CWE-681](https://agentprime.io/advisories/tag/cwe-681.md)
- **Published:** 31 Jul 2026
- **Updated:** 31 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 31 Jul 2026, 19:40 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `Magick.NET-Q16-AnyCPU` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-HDRI-AnyCPU` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-HDRI-OpenMP-arm64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-HDRI-x64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-HDRI-x86` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-OpenMP-arm64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-OpenMP-x64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-arm64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-x64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-x86` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q8-AnyCPU` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q8-OpenMP-arm64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q8-OpenMP-x64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q8-arm64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q8-x64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q8-x86` (NuGet): affected `<14.15.0`; fixed in `14.15.0`
- `Magick.NET-Q16-HDRI-arm64` (NuGet): affected `<14.15.0`; fixed in `14.15.0`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0022, the 12th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:22 UTC: First seen by agentprime
- 31 Oct 2026, 15:22 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-pjxj-pchx-4c3m)

## Sources

- [GitHub Advisory Database: GHSA-pjxj-pchx-4c3m](https://github.com/advisories/GHSA-pjxj-pchx-4c3m)
- [OSV: GHSA-pjxj-pchx-4c3m](https://osv.dev/vulnerability/GHSA-pjxj-pchx-4c3m)
- <https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-pjxj-pchx-4c3m>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-53466>
- <https://github.com/ImageMagick/ImageMagick/commit/47ca7210515f3c9ea033b86fe4323a70caa74468>
- <https://github.com/ImageMagick/ImageMagick>
- <https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-26>
- <https://github.com/dlemstra/Magick.NET/releases/tag/14.15.0>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-pjxj-pchx-4c3m>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-pjxj-pchx-4c3m/>. Everything for agents: <https://agentprime.io/llms.txt>.