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Back to active CVEs
Medium · CVSS 6.3CVE-2026-56367GHSA-273H-M46V-96Q4

ImageMagick - Heap Out-of-Bounds Read in PSB RLE DecodingCVE-2026-56367

Answer in brief

CVE-2026-56367 records a Medium severity (CVSS 6.3) vulnerability in ImageMagick - Heap Out-of-Bounds Read in PSB RLE Decoding. The current sources do not mark it as known exploited. The current feed maps ImageMagick/ImageMagick (generic), ImageMagick/ImageMagick (generic), Magick.NET-Q16-AnyCPU (nuget), Magick.NET-Q16-arm64 (nuget) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 21, 2026Updated Nov 8, 2026Source checked Nov 8, 2026First seen by HOL Jun 21, 2026Material review Nov 8, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.3
Exploitation
Not marked as known exploited
Affected software
21 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ImageMagick/ImageMagick (generic), ImageMagick/ImageMagick (generic), Magick.NET-Q16-AnyCPU (nuget), Magick.NET-Q16-arm64 (nuget) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ImageMagick/ImageMagickgeneric>=7.0.0 <7.1.2-157.1.2-15
ImageMagick/ImageMagickgeneric>=6.9.0 <6.9.13-406.9.13-40
Magick.NET-Q16-AnyCPUnuget<14.10.314.10.3
Magick.NET-Q16-arm64nuget<14.10.314.10.3
Magick.NET-Q16-HDRI-AnyCPUnuget<14.10.314.10.3
Magick.NET-Q16-HDRI-arm64nuget<14.10.314.10.3
Magick.NET-Q16-HDRI-OpenMP-arm64nuget<14.10.314.10.3
Magick.NET-Q16-HDRI-OpenMP-x64nuget<14.10.314.10.3
Magick.NET-Q16-HDRI-x64nuget<14.10.314.10.3
Magick.NET-Q16-HDRI-x86nuget<14.10.314.10.3
Magick.NET-Q16-OpenMP-arm64nuget<14.10.314.10.3
Magick.NET-Q16-OpenMP-x64nuget<14.10.314.10.3
Magick.NET-Q16-OpenMP-x86nuget<14.10.314.10.3
Magick.NET-Q16-x64nuget<14.10.314.10.3
Magick.NET-Q16-x86nuget<14.10.314.10.3
Magick.NET-Q8-AnyCPUnuget<14.10.314.10.3
Magick.NET-Q8-arm64nuget<14.10.314.10.3
Magick.NET-Q8-OpenMP-arm64nuget<14.10.314.10.3
Magick.NET-Q8-OpenMP-x64nuget<14.10.314.10.3
Magick.NET-Q8-x64nuget<14.10.314.10.3
Magick.NET-Q8-x86nuget<14.10.314.10.3

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ImageMagick/ImageMagick, ImageMagick/ImageMagick, Magick.NET-Q16-AnyCPU.
  2. 2Review the reported fix. Update ImageMagick/ImageMagick to 7.1.2-15; ImageMagick/ImageMagick to 6.9.13-40; Magick.NET-Q16-AnyCPU to 14.10.3; Magick.NET-Q16-arm64 to 14.10.3; Magick.NET-Q16-HDRI-AnyCPU to 14.10.3; Magick.NET-Q16-HDRI-arm64 to 14.10.3; Magick.NET-Q16-HDRI-OpenMP-arm64 to 14.10.3; Magick.NET-Q16-HDRI-OpenMP-x64 to 14.10.3; Magick.NET-Q16-HDRI-x64 to 14.10.3; Magick.NET-Q16-HDRI-x86 to 14.10.3; Magick.NET-Q16-OpenMP-arm64 to 14.10.3; Magick.NET-Q16-OpenMP-x64 to 14.10.3; Magick.NET-Q16-OpenMP-x86 to 14.10.3; Magick.NET-Q16-x64 to 14.10.3; Magick.NET-Q16-x86 to 14.10.3; Magick.NET-Q8-AnyCPU to 14.10.3; Magick.NET-Q8-arm64 to 14.10.3; Magick.NET-Q8-OpenMP-arm64 to 14.10.3; Magick.NET-Q8-OpenMP-x64 to 14.10.3; Magick.NET-Q8-x64 to 14.10.3; Magick.NET-Q8-x86 to 14.10.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jun 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 21, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • NVD vulnerability recordnvd.nist.gov
Upstream source description

ImageMagick before 7.1.2-15 and 6.9.x before 6.9.13-40 contains an integer overflow in the PSB (PSD v2) RLE decoding path (ReadPSDChannelRLE in coders/psd.c) that causes a heap out-of-bounds read on 32-bit builds. Processing a crafted PSB file can lead to information disclosure or a crash.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-125, CWE-190
Source
CVE List V5
Source checked
Nov 8, 2026
References
6 linked sources
Open source record