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Fencer Vulns
low 3.3

CVE-2026-56366 json

ImageMagick - Memory Leak in META Reader APP1JPEG Error Path

published 2026-03-26 7 mo ago modified 2026-10-29 10 d ago also EUVD-2026-42888 , GHSA-377p-xr9w-8773 , GHSA-9r56-3gjq-hqf7 , JLSEC-2026-1047

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

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.

Patch / fix

  • nuget Magick.NET-Q16-AnyCPU 14.11.1
  • nuget Magick.NET-Q16-HDRI-AnyCPU 14.11.1
  • nuget Magick.NET-Q16-HDRI-OpenMP-arm64 14.11.1
  • nuget Magick.NET-Q16-HDRI-arm64 14.11.1
  • nuget Magick.NET-Q16-HDRI-x64 14.11.1
  • nuget Magick.NET-Q16-HDRI-x86 14.11.1
  • nuget Magick.NET-Q16-OpenMP-arm64 14.11.1
  • nuget Magick.NET-Q16-OpenMP-x64 14.11.1
  • nuget Magick.NET-Q16-OpenMP-x86 14.11.1
  • nuget Magick.NET-Q16-arm64 14.11.1
  • nuget Magick.NET-Q16-x64 14.11.1
  • nuget Magick.NET-Q16-x86 14.11.1
  • nuget Magick.NET-Q8-AnyCPU 14.11.1
  • nuget Magick.NET-Q8-OpenMP-arm64 14.11.1
  • nuget Magick.NET-Q8-OpenMP-x64 14.11.1
  • nuget Magick.NET-Q8-arm64 14.11.1
  • nuget Magick.NET-Q8-x64 14.11.1
  • nuget Magick.NET-Q8-x86 14.11.1
  • julia ImageMagick_jll 7.1.2023+0
  • ImageMagick ImageMagick 6.9.13-43, 7.1.2-18
  • imagemagick Debian 12 8:6.9.11.60+dfsg-1.6+deb12u12
  • imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u12
  • imagemagick Debian 14 8:7.1.2.18+dfsg1-1

debian advisories DEBIAN-CVE-2026-56366

  • imagemagick Ubuntu Pro 14.04 LTS 8:6.7.7.10-6ubuntu3.13+esm25
  • imagemagick Ubuntu Pro 16.04 LTS 8:6.8.9.9-7ubuntu5.16+esm24
  • imagemagick Ubuntu Pro 18.04 LTS 8:6.9.7.4+dfsg-16ubuntu6.15+esm16
  • imagemagick Ubuntu Pro 20.04 LTS 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm14
  • imagemagick Ubuntu Pro 22.04 LTS 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
  • imagemagick Ubuntu Pro 24.04 LTS 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13

ubuntu advisories UBUNTU-CVE-2026-56366

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ImageMagick SLE Module for Development Tools 15 SP7, SLE Module for Desktop Applications 15 SP7 7.1.1.43-150700.3.70.1
  • ImageMagick SLE Module for Desktop Applications 15 SP7 7.1.0.9-150400.6.101.1
  • ImageMagick SLES for SAP applications 16.0, SLES 16.0 7.1.2.0-160000.12.1
  • ImageMagick SLES for SAP 15 SP6, SLES 15 SP6-LTSS 7.1.1.21-150600.3.80.2
  • ImageMagick SLES LTSS Extended Security 12 SP5 6.8.8.1-71.264.1

suse advisories SUSE-SU-2026:3219-1SUSE-SU-2026:3194-1SUSE-SU-2026:3193-1SUSE-SU-2026:3192-1SUSE-SU-2026:22829-1

  • ImageMagick openSUSE Leap 16.0 7.1.2.0-160000.12.1
  • ImageMagick openSUSE Tumbleweed 7.1.2.27-2.1

opensuse advisories openSUSE-SU-2026:21391-1openSUSE-SU-2026:11273-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-56366 updated cvss 3.3

ImageMagick: ImageMagick: Denial of Service via memory leak in APP1JPEG image processing

  • Red Hat Enterprise Linux 6 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 7 ImageMagick, ImageMagick-c++, ImageMagick-perl
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 4.8 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
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
GitHub 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CNA 4.0 4.8 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
nuget Magick.NET-Q16-AnyCPU
<14.11.1
14.11.1
nuget Magick.NET-Q16-HDRI-AnyCPU
<14.11.1
14.11.1
nuget Magick.NET-Q16-HDRI-OpenMP-arm64
<14.11.1
14.11.1
nuget Magick.NET-Q16-HDRI-arm64
<14.11.1
14.11.1
nuget Magick.NET-Q16-HDRI-x64
<14.11.1
14.11.1
nuget Magick.NET-Q16-HDRI-x86
<14.11.1
14.11.1
nuget Magick.NET-Q16-OpenMP-arm64
<14.11.1
14.11.1
nuget Magick.NET-Q16-OpenMP-x64
<14.11.1
14.11.1
nuget Magick.NET-Q16-OpenMP-x86
<14.11.1
14.11.1
nuget Magick.NET-Q16-arm64
<14.11.1
14.11.1
nuget Magick.NET-Q16-x64
<14.11.1
14.11.1
nuget Magick.NET-Q16-x86
<14.11.1
14.11.1
nuget Magick.NET-Q8-AnyCPU
<14.11.1
14.11.1
nuget Magick.NET-Q8-OpenMP-arm64
<14.11.1
14.11.1
nuget Magick.NET-Q8-OpenMP-x64
<14.11.1
14.11.1
nuget Magick.NET-Q8-arm64
<14.11.1
14.11.1
nuget Magick.NET-Q8-x64
<14.11.1
14.11.1
nuget Magick.NET-Q8-x86
<14.11.1
14.11.1
julia ImageMagick_jll
<7.1.2023+0
7.1.2023+0

Affected products

  • ImageMagick ImageMagick

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.