{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116137", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-25T11:15:17.810Z", "datePublished": "2026-10-25T11:51:01.980Z", "dateUpdated": "2026-10-25T11:51:01.980Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-25T11:51:01.980Z"}, "datePublic": "2026-10-21T00:00:00.000Z", "title": "adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names", "descriptions": [{"lang": "en", "value": "adm-zip through 0.6.1 contains a duplicate-entry validation bypass that allows attackers to evade the readEntries() check by using canonically equivalent entry names like './hello.txt' and 'hello.txt'. Attackers can craft ZIP archives where getEntry() or readAsText() validates benign content while extractAllTo() writes malicious content to the same path, bypassing integrity checks."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Interpretation Conflict", "cweId": "CWE-436", "type": "CWE"}]}], "affected": [{"vendor": "cthackers", "product": "adm-zip", "defaultStatus": "unaffected", "packageURL": "pkg:npm/adm-zip", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "0.6.1"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adm-zip_project:adm-zip:*:*:*:*:*:*:*:*", "versionEndIncluding": "0.6.1"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW"}}], "references": [{"url": "https://github.com/cthackers/adm-zip/issues/587", "tags": ["issue-tracking"], "name": "GitHub Issue #587"}, {"url": "https://github.com/cthackers/adm-zip", "tags": ["product"]}, {"url": "https://github.com/cthackers/adm-zip/blob/cb2cf9ba4c7c865db426e2de1997cb41194d9872/zipFile.js#L81-L92", "tags": ["technical-description"]}, {"url": "https://github.com/cthackers/adm-zip/blob/cb2cf9ba4c7c865db426e2de1997cb41194d9872/adm-zip.js#L87", "tags": ["technical-description"]}, {"url": "https://github.com/cthackers/adm-zip/blob/cb2cf9ba4c7c865db426e2de1997cb41194d9872/util/utils.js#L383", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/adm-zip-through-0.6.1-duplicate-entry-validation-bypass-via-canonically-equivalent-names"}], "credits": [{"lang": "en", "value": "Arjun Jain", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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