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ImageMagick CVE-2026-61871

| EUVDEUVD-2026-44619 MEDIUM
Memory Leak (CWE-401)
2026-07-15 VulnCheck GHSA-42mf-mh48-7gjj
Denial Of Service Imagemagick
6.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
6.3 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/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
vuln.today AI
3.7 LOW

Network-reachable via file upload with no auth needed (PR:N), but AC:H because triggering a malloc failure requires specific memory pressure conditions; availability impact is Low with no C/I exposure.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/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
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Jul 15, 2026 - 13:03 EUVD
Analysis Generated
Jul 15, 2026 - 12:20 vuln.today
CVE Published
Jul 15, 2026 - 11:25 cve.org
MEDIUM 6.3

DescriptionCVE.org

ImageMagick before 7.1.2-26 and 6.9.13-51 contains a memory leak in the ICON decoder that occurs when a memory allocation fails. Processing a crafted ICON file that triggers an allocation failure leaks memory, which may lead to a denial of service.

AnalysisAI

Memory leak in ImageMagick's ICON decoder exposes services that process user-supplied images to a potential denial of service. Both the 7.x and 6.x release branches are affected - specifically versions before 7.1.2-26 and 6.9.13-51 respectively. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Supply crafted ICON file via upload endpoint
Delivery
ImageMagick ICON decoder invoked
Exploit
Memory allocation failure triggered mid-parse
Execution
Allocated buffers not freed on error path
Persist
Memory leak accumulates across repeated requests
Impact
Process memory exhausted, service unavailable
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Vulnerability AssessmentAI

Exploitation The target system must process attacker-supplied ICON format files using a vulnerable version of ImageMagick (before 7.1.2-26 or before 6.9.13-51). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.3 with vector AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N appropriately characterizes this as a moderate, non-trivial issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker submits a maliciously crafted ICON file to a web application or API endpoint that passes user-supplied images through ImageMagick for processing (e.g., thumbnail generation, format conversion). The crafted file is designed to provoke a memory allocation failure within the ICON decoder. …
Remediation Upgrade to ImageMagick 7.1.2-26 or later (for 7.x deployments) or 6.9.13-51 or later (for 6.x deployments) as documented in the vendor security advisory at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-h58x-r7f7-rh84. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-61871 vulnerability details – vuln.today
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