CVE-2026-56362: imagemagick Out-of-bounds Read — Fix

Description

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.

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CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L

EPSS — Exploit Prediction

0.0019

Probability of exploitation

0.09%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
imagemagick	imagemagick	< 6.9.13-40
imagemagick	imagemagick	7.0.0-0 — 7.1.2-15

References

Advisories & Patches

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-gq5v-qf8q-fp77

Other References

https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-read-in-getpixelindex-via-openpixelcache-metadata-desynchronization

Frequently Asked Questions

What is CVE-2026-56362? +

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2026-56362? +

CVE-2026-56362 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0019, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-56362? +

CVE-2026-56362 affects products from imagemagick, specifically: imagemagick. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-56362? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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