{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-59991",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-07T19:41:00.005Z",
        "datePublished": "2026-09-22T19:11:38.661Z",
        "dateUpdated": "2026-09-22T19:37:39.755Z"
    },
    "containers": {
        "cna": {
            "title": "psd-tools: Uncontrolled memory allocation in psd-tools composite/numpy via crafted PSD geometry",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-789",
                            "lang": "en",
                            "description": "CWE-789: Memory Allocation with Excessive Size Value",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m"
                },
                {
                    "name": "https://github.com/psd-tools/psd-tools/commit/a3d9a53ad51e667b5772a4f636ca6f2e16f4b271",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/psd-tools/psd-tools/commit/a3d9a53ad51e667b5772a4f636ca6f2e16f4b271"
                },
                {
                    "name": "https://github.com/psd-tools/psd-tools/releases/tag/v1.17.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/psd-tools/psd-tools/releases/tag/v1.17.4"
                }
            ],
            "affected": [
                {
                    "vendor": "psd-tools",
                    "product": "psd-tools",
                    "versions": [
                        {
                            "version": "< 1.17.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-22T19:11:38.661Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to 1.17.4, PSDImage.composite() and PSDImage.numpy() allocated output buffers from attacker-controlled PSD header geometry, including width, height, channels, depth, and per-layer rectangles, before validating those values against the available file data. A tiny crafted PSD could therefore cause multi-gigabyte memory allocation, and PSDImage.composite() could return a black image with only a warning instead of raising an exception. Services that composite untrusted PSD files could be terminated by out-of-memory handling. This issue is fixed in version 1.17.4."
                }
            ],
            "source": {
                "advisory": "GHSA-8q6g-vjhf-jp8m",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/psd-tools/psd-tools/security/advisories/GHSA-8q6g-vjhf-jp8m",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-22T19:36:58.263987Z",
                                "id": "CVE-2026-59991",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-22T19:37:39.755Z"
                }
            }
        ]
    }
}