{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-127209",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-11-12T16:30:10.903Z",
        "datePublished": "2026-11-12T21:18:18.139Z",
        "dateUpdated": "2026-11-12T21:18:18.139Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-11-12T21:18:18.139Z"
            },
            "title": "Xiaomi Mi Browser < 14.66.0 Path Traversal via ThirdDocViewerActivity",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Xiaomi Mi Browser Android Application (com.mi.globalbrowser) before 14.66.0-gn contains a path traversal vulnerability in the exported ThirdDocViewerActivity component, where CopyExternalFile.copyFromUri() copies content provider streams using an unsanitized filename from the _display_name column without basename reduction or canonical-path checks. A zero-permission co-resident malicious application can supply a crafted content provider with a _display_name containing .. sequences to make the browser write attacker-controlled bytes to an arbitrary path within its external storage directory, escaping the intended cache_docs staging location without requiring user interaction."
                }
            ],
            "datePublic": "2026-11-10T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "cweId": "CWE-22",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "vendor": "Xiaomi",
                    "product": "Mi Browser (com.mi.globalbrowser)",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver",
                            "lessThan": "14.66.0"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 5.1,
                        "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
                    }
                },
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE",
                        "version": "3.1",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 4,
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/actuator/cve/blob/main/Xiaomi/2026.07.09%20CVD%20-%20Xiaomi%20Mi%20Browser.md",
                    "name": "Researcher Disclosure",
                    "tags": [
                        "technical-description",
                        "exploit"
                    ]
                },
                {
                    "url": "https://www.vulncheck.com/advisories/xiaomi-mi-browser-path-traversal-via-thirddocvieweractivity",
                    "name": "VulnCheck Advisory: Xiaomi Mi Browser < 14.66.0 Path Traversal via ThirdDocViewerActivity",
                    "tags": [
                        "third-party-advisory"
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Edward \"Actuator\" Warren",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck"
            }
        }
    }
}