CVE-2026-56361 | ImageMagick before 7.1.2-19 contains an off-by-one error in … | CVSS 3.3 LOW

Description

ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads. Attackers can trigger heap buffer overflow by providing incorrect morphology parameters causing single pixel memory access violations.

Metadata

CVE ID: CVE-2026-56361
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 21:16 UTC
Published: 2026-06-30 22:08 UTC
Last updated: 2026-06-30 22:08 UTC
Primary CWE: CWE-125
Out-of-bounds Read
Vendor / Product: ImageMagick / ImageMagick
Sources: cve.org · NVD

Severity & Metrics

3.3 LOW CVSS 3.1

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

Affected products (2)

Vendor	Product	Platform	Versions
ImageMagick	ImageMagick	—	0 < 7.1.2-19, 7.1.2-19
ImageMagick	ImageMagick	—	0 < 6.9.13-44, 6.9.13-44

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	Out-of-bounds Read

CVSS scores (2)

Score	Severity	Version	Source	Vector
4.8	MEDIUM	4.0	cna	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
3.3	LOW	3.1	cna	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References (2)

GitHub Security Advisory (GHSA-q8h3-jv9v-57qx) https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-q8h3-jv9v-57qx
VulnCheck Advisory: ImageMagick - Heap Buffer Overflow via Off-by-One in Morphology Processing https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-via-off-by-one-in-morphology-processing