Bug 2529440 (CVE-2026-86421)

Summary: CVE-2026-86421 ImageMagick: ImageMagick: Denial of Service via memory leak in MSL decoder
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in ImageMagick. A remote attacker could exploit this vulnerability by providing a specially crafted MSL (Magick Scripting Language) image. This triggers memory allocation without proper deallocation, leading to memory exhaustion. Successful exploitation can result in a denial of service (DoS) for the affected system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2529487, 2529488    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-07 13:04:21 UTC
ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.