Package Instance

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{
    "url": "http://public2.vulnerablecode.io/api/packages/74400?format=api",
    "purl": "pkg:pypi/openexr@3.4.6",
    "type": "pypi",
    "namespace": "",
    "name": "openexr",
    "version": "3.4.6",
    "qualifiers": {},
    "subpath": "",
    "is_vulnerable": false,
    "next_non_vulnerable_version": "2.2.1",
    "latest_non_vulnerable_version": "3.4.6",
    "affected_by_vulnerabilities": [],
    "fixing_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/50521?format=api",
            "vulnerability_id": "VCID-qn33-asyh-y3hw",
            "summary": "OpenEXR's CompositeDeepScanLine integer-overflow leads to heap OOB write\nFunction: `CompositeDeepScanLine::readPixels`, reachable from high-level multipart deep read flows (`MultiPartInputFile` + `DeepScanLineInputPart` + `CompositeDeepScanLine`).\n\nVulnerable lines (`src/lib/OpenEXR/ImfCompositeDeepScanLine.cpp`):\n- `total_sizes[ptr] += counts[j][ptr];` (line ~511)\n- `overall_sample_count += total_sizes[ptr];` (line ~514)\n- `samples[channel].resize (overall_sample_count);` (line ~535)\n\nImpact: 32-bit sample-count accumulation wrap leads to undersized allocation, then decode writes with true sample volume, causing heap OOB write in `generic_unpack_deep_pointers` (`src/lib/OpenEXRCore/unpack.c:1374`) (DoS/Crash, memory corruption/RCE).\n\nAttack scenario:\n- Attacker provides multipart deep EXR with many parts and very large sample counts per pixel.\n- Uses compression (RLE/ZIPS) to keep file size relatively small vs decode pressure.\n- The overflow happens in composite sample accounting (`unsigned int`), while pointer progression for decode uses larger counters and reaches out-of-bounds.\n\nTested on: `OpenEXR 4.0.0-dev` (commit 83449669402080874b25ff1fa740649a9e6ea064) but this code has existed since v2.3.0",
            "references": [
                {
                    "reference_url": "https://github.com/AcademySoftwareFoundation/openexr",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://github.com/AcademySoftwareFoundation/openexr"
                },
                {
                    "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27622",
                    "reference_id": "CVE-2026-27622",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27622"
                },
                {
                    "reference_url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-cr4v-6jm6-4963",
                    "reference_id": "GHSA-cr4v-6jm6-4963",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-cr4v-6jm6-4963"
                },
                {
                    "reference_url": "https://github.com/advisories/GHSA-cr4v-6jm6-4963",
                    "reference_id": "GHSA-cr4v-6jm6-4963",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://github.com/advisories/GHSA-cr4v-6jm6-4963"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/74398?format=api",
                    "purl": "pkg:pypi/openexr@3.2.6",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/openexr@3.2.6"
                },
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/74399?format=api",
                    "purl": "pkg:pypi/openexr@3.3.8",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/openexr@3.3.8"
                },
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/74400?format=api",
                    "purl": "pkg:pypi/openexr@3.4.6",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/openexr@3.4.6"
                }
            ],
            "aliases": [
                "CVE-2026-27622",
                "GHSA-cr4v-6jm6-4963"
            ],
            "risk_score": null,
            "exploitability": null,
            "weighted_severity": null,
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-qn33-asyh-y3hw"
        }
    ],
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/openexr@3.4.6"
}