{"id":"CVE-2026-116137","title":"adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names","summary":"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 wh…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-436"],"vendor":"cthackers","product":"adm-zip","affected":["adm-zip <= 0.6.1"],"published":"2026-10-25","updated":"2026-10-25","sourceUpdated":"2026-10-25T11:51:01.980Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116137","references":[{"url":"https://github.com/cthackers/adm-zip/issues/587","label":"GitHub Issue #587"},{"url":"https://github.com/cthackers/adm-zip"},{"url":"https://github.com/cthackers/adm-zip/blob/cb2cf9ba4c7c865db426e2de1997cb41194d9872/zipFile.js#L81-L92"},{"url":"https://github.com/cthackers/adm-zip/blob/cb2cf9ba4c7c865db426e2de1997cb41194d9872/adm-zip.js#L87"},{"url":"https://github.com/cthackers/adm-zip/blob/cb2cf9ba4c7c865db426e2de1997cb41194d9872/util/utils.js#L383"},{"url":"https://www.vulncheck.com/advisories/adm-zip-through-0.6.1-duplicate-entry-validation-bypass-via-canonically-equivalent-names","label":"VulnCheck Advisory: adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names"}],"tags":["cve.org"],"ingestedAt":"2026-10-25T22:08:29.958Z","slug":"CVE-2026-116137","body":"## Overview\n\nadm-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.\n\n## Affected\n\n- `adm-zip <= 0.6.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}