{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-86542",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-09-07T22:18:52.898Z",
        "datePublished": "2026-09-07T23:03:20.058Z",
        "dateUpdated": "2026-09-24T14:21:26.008Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-09-24T14:21:26.008Z"
            },
            "datePublic": "2026-08-16T00:00:00.000Z",
            "title": "knowns before 0.30.0 Path Traversal via Import Name",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "knowns before 0.30.0 fails to validate import names in the import routes, allowing unauthenticated attackers to write files outside the imports directory. Attackers can supply traversal sequences in the name parameter to escape the imports directory and overwrite arbitrary files writable by the server process."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "cweId": "CWE-22",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "knowns-dev",
                    "product": "knowns",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/knowns",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "0.30.0"
                        },
                        {
                            "version": "0.30.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "cvssV4_0": {
                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    }
                },
                {
                    "format": "CVSS",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.1,
                        "baseSeverity": "CRITICAL"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/knowns-dev/knowns/security/advisories/GHSA-wh3c-v55g-qfg8",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "name": "GitHub Security Advisory (GHSA-wh3c-v55g-qfg8)"
                },
                {
                    "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/imports.go#L519-L551",
                    "tags": [
                        "technical-description"
                    ],
                    "name": "Import add builds the destination from the caller-supplied name (v0.29.1)"
                },
                {
                    "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/imports.go#L376-L420",
                    "tags": [
                        "technical-description"
                    ],
                    "name": "gitCloneImport writes cloned files beneath the unvalidated name (v0.29.1)"
                },
                {
                    "url": "https://github.com/knowns-dev/knowns/commit/d3989829fb5095666d23d005b2f78a082832a396",
                    "tags": [
                        "patch"
                    ],
                    "name": "knowns fix commit d3989829fb50"
                },
                {
                    "url": "https://github.com/knowns-dev/knowns/releases/tag/v0.30.0",
                    "tags": [
                        "release-notes"
                    ],
                    "name": "knowns v0.30.0 Release Notes"
                },
                {
                    "name": "VulnCheck Advisory: knowns before 0.30.0 Path Traversal via Import Name",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/knowns-before-0.30.0-path-traversal-via-import-name"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Tong Hoang Gia (uziii2208)",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "Nguyen Huy Hoang (hoanggxyuuki)",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-08T12:43:09.777150Z",
                                "id": "CVE-2026-86542",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-08T12:43:22.850Z"
                }
            }
        ]
    }
}