---
title: "CVE-2026-56366\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-56366?format=md
keywords: index, follow
---

# CVE-2026-56366

Publication date 10 July 2026

Last updated 25 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**3.3 · Low**

[Score breakdown](https://ubuntu.com/security/CVE-2026-56366?format=md#impact-score)

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## Description

ImageMagick before 7.1.2-18 contains a memory leak vulnerability in the
META reader when processing APP1JPEG input paths. Attackers can trigger
this memory leak by providing specially crafted APP1JPEG image files,
causing denial of service through resource exhaustion.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| imagemagick | 26.04 LTS resolute | Not affected |
| 24.04 LTS noble | Vulnerable |
| 22.04 LTS jammy | Vulnerable |
| 20.04 LTS focal | Vulnerable |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Vulnerable |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2026-56366?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| imagemagick | * Upstream:   [bee248e](https://github.com/ImageMagick/ImageMagick/commit/bee248ee853a686a969fae9cfb1e02dd5aae245b) |

## Severity score breakdown

CVSS version:

CVSS v4.0

[CVSS v4.0](https://ubuntu.com/security/CVE-2026-56366?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-56366?format=md)

**Base score**

4.8 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | None |
  | User interaction | Passive |
  | Vulnerable system - Confidentiality impact | None |
  | Vulnerable system - Integrity impact | None |
  | Vulnerable system - Availability impact | Low |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 4.8 · Medium |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** 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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-56366)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-56366)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-56366)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-56366)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-56366>
* <https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-9r56-3gjq-hqf7>
* <https://www.vulncheck.com/advisories/imagemagick-memory-leak-in-meta-reader-app1jpeg-error-path>