{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-77605",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-20T20:48:20.507Z",
        "datePublished": "2026-09-22T17:13:21.434Z",
        "dateUpdated": "2026-09-22T17:13:21.434Z"
    },
    "containers": {
        "cna": {
            "title": "Notepad++ “Run by system” executes *.txt.cmd when user selected *.txt (target confusion → command execution)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-20",
                            "lang": "en",
                            "description": "CWE-20: Improper Input Validation",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-706",
                            "lang": "en",
                            "description": "CWE-706: Use of Incorrectly-Resolved Name or Reference",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-w5xq-frjg-w4cw",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-w5xq-frjg-w4cw"
                },
                {
                    "name": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0da1d4f6b334317aa979db13ac77ee24d",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0da1d4f6b334317aa979db13ac77ee24d"
                },
                {
                    "name": "https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8"
                },
                {
                    "name": "https://notepad-plus-plus.org/news/v898-released",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://notepad-plus-plus.org/news/v898-released"
                }
            ],
            "affected": [
                {
                    "vendor": "notepad-plus-plus",
                    "product": "notepad-plus-plus",
                    "versions": [
                        {
                            "version": "< 8.9.8",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-22T17:13:21.434Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Notepad++ is a free and open-source source code editor. Prior to 8.9.8, the Folder as Workspace Run by system action in Notepad++ can resolve a different sibling file than the file selected by the user. When an attacker places a command script whose name is the selected text-file path with .cmd appended, and the user invokes Run by system on the text file on Windows 10 or Windows 11, Notepad++ can execute the sibling script as the current user instead of opening the selected file. This issue is fixed in version 8.9.8."
                }
            ],
            "source": {
                "advisory": "GHSA-w5xq-frjg-w4cw",
                "discovery": "UNKNOWN"
            }
        }
    }
}