EUVD-2026-41119Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
MNG files are network-submittable with no authentication; only partial heap disclosure occurs with no integrity or availability impact, yielding C:L/I:N/A:N.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-51 and 7.1.2-26, the MNG decoder contains a possible heap information disclosure vulnerability because part of the pixels are left unchanged. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.
AnalysisAI
Heap memory disclosure in ImageMagick's MNG decoder affects all versions prior to 6.9.13-51 (legacy branch) and 7.1.2-26 (current branch), allowing remote unauthenticated attackers to obtain partial heap contents by submitting a crafted MNG image file and retrieving the processed output. The root cause (CWE-908) is that pixel buffers are not fully initialized before output is written, leaving residual in-process heap data embedded in the resulting image. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires three conditions: (1) the target application must accept MNG-format image files as input and pass them to a vulnerable ImageMagick version (prior to 6.9.13-51 or 7.1.2-26); (2) the attacker must be able to retrieve the processed output image, since blind processing pipelines negate the disclosure; and (3) the network path to the processing endpoint must be accessible to the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N (5.3 Medium) correctly reflects a network-reachable, zero-authentication flaw with limited and scoped impact: only partial confidentiality loss, no integrity or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker submits a specially crafted MNG image to a publicly accessible image conversion or preview service backed by a vulnerable ImageMagick version. The MNG decoder processes the file, leaving uninitialized heap bytes embedded in the output pixel data. … |
| Remediation | Upgrade ImageMagick to version 6.9.13-51 or later on the 6.x branch, or to version 7.1.2-26 or later on the 7.x branch, per the vendor security advisory at https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-8g53-9m3c-69xg. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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