{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-107218",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-07T14:34:14.816Z",
        "datePublished": "2026-10-07T18:29:38.606Z",
        "dateUpdated": "2026-10-07T18:29:38.606Z"
    },
    "containers": {
        "cna": {
            "title": "Excelize: RIGHT() on supplementary-plane text slices with a negative index and panics",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-129",
                            "lang": "en",
                            "description": "CWE-129: Improper Validation of Array Index",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "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:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/qax-os/excelize/security/advisories/GHSA-8jjq-8j9w-m2v6",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/qax-os/excelize/security/advisories/GHSA-8jjq-8j9w-m2v6"
                },
                {
                    "name": "https://github.com/qax-os/excelize/pull/2390",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/qax-os/excelize/pull/2390"
                },
                {
                    "name": "https://github.com/qax-os/excelize/commit/ecd99d761fe0489f1ed308e2f7dc2e0502d1a396",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/qax-os/excelize/commit/ecd99d761fe0489f1ed308e2f7dc2e0502d1a396"
                }
            ],
            "affected": [
                {
                    "vendor": "qax-os",
                    "product": "excelize",
                    "versions": [
                        {
                            "version": ">= 2.10.1, <= 2.11.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-07T18:29:38.606Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.10.1 to 2.11.0, RIGHT validates the requested length with UTF-16 code-unit counts but slices a rune array using Unicode code-point counts. RIGHT reaches leftRight through CalcCellValue, where countUTF16String validates one unit but utf8.RuneCountInString supplies the slice index in another. When RIGHT evaluates supplementary-plane text with a requested character count between the rune count and UTF-16 code-unit count, the inconsistent units produce a negative rune-slice index, allowing an attacker to panic during formula evaluation. No fixed version is available as of this review."
                }
            ],
            "source": {
                "advisory": "GHSA-8jjq-8j9w-m2v6",
                "discovery": "UNKNOWN"
            }
        }
    }
}