{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-107215",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-07T14:34:14.815Z",
        "datePublished": "2026-10-07T17:48:03.233Z",
        "dateUpdated": "2026-10-07T17:48:03.233Z"
    },
    "containers": {
        "cna": {
            "title": "Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS",
            "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/qax-os/excelize/security/advisories/GHSA-x2q3-8cjh-766f",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/qax-os/excelize/security/advisories/GHSA-x2q3-8cjh-766f"
                },
                {
                    "name": "https://github.com/qax-os/excelize/pull/2396",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/qax-os/excelize/pull/2396"
                },
                {
                    "name": "https://github.com/qax-os/excelize/commit/5f636f9dcde55911f14290060b017f0cc88cd694",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/qax-os/excelize/commit/5f636f9dcde55911f14290060b017f0cc88cd694"
                }
            ],
            "affected": [
                {
                    "vendor": "qax-os",
                    "product": "excelize",
                    "versions": [
                        {
                            "version": ">= 2.3.1, <= 2.11.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-07T17:48:03.233Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory entry streamSize for EncryptionInfo and EncryptedPackage allocations before validating the stream. When a crafted OLE compound file declares a negative or extremely large EncryptionInfo or EncryptedPackage stream size, the declared size reaches make with a negative length or forces a multi-gigabyte allocation, allowing an attacker to panic or exhaust process memory. No fixed version is available as of this review."
                }
            ],
            "source": {
                "advisory": "GHSA-x2q3-8cjh-766f",
                "discovery": "UNKNOWN"
            }
        }
    }
}