{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54525",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T18:40:01.651Z",
        "datePublished": "2026-10-14T19:06:59.440Z",
        "dateUpdated": "2026-10-15T15:05:57.227Z"
    },
    "containers": {
        "cna": {
            "title": "Markdown Preview Enhanced: One Click RCE via Markdown Link Command Injection on Windows",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-78",
                            "lang": "en",
                            "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/security/advisories/GHSA-7v6f-3vq6-r373",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/security/advisories/GHSA-7v6f-3vq6-r373"
                },
                {
                    "name": "https://github.com/shd101wyy/crossnote/pull/442",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shd101wyy/crossnote/pull/442"
                },
                {
                    "name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/pull/2318",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/pull/2318"
                },
                {
                    "name": "https://github.com/shd101wyy/crossnote/commit/5588ca2121c3da43fe331575dc5cf4ef347b91ee",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shd101wyy/crossnote/commit/5588ca2121c3da43fe331575dc5cf4ef347b91ee"
                },
                {
                    "name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/dcd80281c986293b93d9f1af34ced64dcb230c77",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/dcd80281c986293b93d9f1af34ced64dcb230c77"
                },
                {
                    "name": "https://github.com/shd101wyy/crossnote/releases/tag/0.9.29",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shd101wyy/crossnote/releases/tag/0.9.29"
                },
                {
                    "name": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/releases/tag/0.8.28",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/shd101wyy/vscode-markdown-preview-enhanced/releases/tag/0.8.28"
                }
            ],
            "affected": [
                {
                    "vendor": "shd101wyy",
                    "product": "vscode-markdown-preview-enhanced",
                    "versions": [
                        {
                            "version": "< 0.8.28",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-14T19:06:59.440Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.28, Markdown Preview Enhanced preview-link handling passes a decoded, Markdown-controlled link target to a Windows file-opening helper that invokes child_process.exec with the start command. When a Windows user opens an untrusted Markdown file and clicks a crafted external or unsupported-scheme link, shell metacharacters in the decoded target are interpreted by cmd.exe as command separators, allowing an attacker-selected command to run with the privileges of the current VS Code user. The attack requires one normal preview-link click but does not require malicious workspace configuration, script execution to be enabled, or additional files. This issue is fixed in version 0.8.28."
                }
            ],
            "source": {
                "advisory": "GHSA-7v6f-3vq6-r373",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-15T13:53:20.006714Z",
                                "id": "CVE-2026-54525",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-15T15:05:57.227Z"
                }
            }
        ]
    }
}