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ImageMagick EUVDEUVD-2026-44615

| CVE-2026-61866 LOW
Memory Leak (CWE-401)
2026-07-15 VulnCheck GHSA-848j-9x6v-4m2q
Denial Of Service Imagemagick
2.1
CVSS 4.0 · Vendor: VulnCheck

Severity by source

Vendor (VulnCheck) PRIMARY
2.1 LOW
CVSS:4.0/AV:L/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
2.9 LOW

Local vector and high complexity reflect that triggering the blob failure requires submitting crafted JNG input to an active process; only low availability impact applies with no C or I.

3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
4.0 AV:L/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:L/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
Local
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 - 12:31 vuln.today
CVE Published
Jul 15, 2026 - 11:25 cve.org
LOW 2.1

DescriptionCVE.org

ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob cannot be opened. Attackers can trigger the memory leak by providing malformed JNG files that fail blob operations, causing resource exhaustion.

AnalysisAI

Memory leak in ImageMagick's JNG encoder before version 7.1.2-26 enables local resource exhaustion when malformed JNG files cause blob open failures without subsequent memory release. The flaw is classified CWE-401 and carries a CVSS 4.0 score of just 2.1, reflecting a local attack vector, high complexity, and availability-only impact - no confidentiality or integrity loss is possible. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Submit crafted JNG file with invalid blob
Delivery
Trigger blob open failure in JNG encoder
Exploit
Encoder exits error path without freeing allocation
Install
Repeat submissions at volume
C2
Accumulate heap leak
Execute
Exhaust process memory
Impact
Service crash or denial of service
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the target system runs ImageMagick before 7.1.2-26 and that JNG-format image processing is active - JNG is not universally enabled and can be blocked via policy.xml. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment All available signals converge on very low real-world risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker or malicious user with access to submit image files to an ImageMagick-based processing service repeatedly uploads crafted JNG files engineered to fail internal blob open operations. Each failed encode leaks a small allocation; under sustained or bulk submission, the cumulative leak gradually exhausts the process's available memory, eventually causing service degradation or a crash. …
Remediation Upgrade to ImageMagick 7.1.2-26 or later, which resolves the missing memory release on the JNG encoder's blob-open failure path, per the upstream advisory at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-99w9-hv66-rfv7. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-44615 vulnerability details – vuln.today
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