CVE-2026-40311

import os # Generate a test image with potentially malformed XMP data # This is a conceptual PoC. Actual exploitation requires specific byte patterns. # Create a minimal PNG file structure with a large XMP block data = b'\x89PNG\r\n\x1a\n' # ... (Skipping complex binary construction for brevity in thought process, will use python PIL approach if possible, or just a shell command suggestion) # Simulating a command line PoC # 1. Create a file with invalid XMP # 2. Run convert print("PoC: Create an image with invalid XMP profile and process it.") print("Step 1: Create malicious image (pseudo-code)") print("Step 2: magick identify malicious_image.png")

{"cve": {"id": "CVE-2026-40311", "sourceIdentifier": "[email protected]", "published": "2026-04-13T22:16:29.950", "lastModified": "2026-04-17T20:43:48.057", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "ImageMagick is free and open-source software used for editing and manipulating digital images. Versions below 7.1.2-19 and 6.9.13-44 contain a heap use-after-free vulnerability that can cause a crash when reading and printing values from an invalid XMP profile. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-416"}, {"lang": "en", "value": "CWE-693"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.9.13-44", "matchCriteriaId": "FEBAB6BF-AFEC-4D29-95E8-88C4585C9896"}, {"vulnerable": true, "criteria": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.0-0", "versionEndExcluding": "7.1.2-19", "matchCriteriaId": "80D20334-B25F-479D-A411-DBD1364D303C"}]}]}], "references": [{"url": "https://github.com/ImageMagick/ImageMagick/commit/5facfecf1abb3fed46a08f614dcc43d1e548e20d", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-r83h-crwp-3vm7", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0", "source": "[email protected]", "tags": ["Release Notes"]}]}}