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.

Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 26 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-41
References
Metrics threat_severity

None

threat_severity

Low


Sun, 25 Oct 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Cthackers
Cthackers adm-zip
Vendors & Products Cthackers
Cthackers adm-zip

Sun, 25 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Description 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.
Title adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names
First Time appeared Adm-zip Project
Adm-zip Project adm-zip
Weaknesses CWE-436
CPEs cpe:2.3:a:adm-zip_project:adm-zip:*:*:*:*:*:*:*:*
Vendors & Products Adm-zip Project
Adm-zip Project adm-zip
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-25T11:51:01.980Z

Reserved: 2026-10-25T11:15:17.810Z

Link: CVE-2026-116137

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-25T12:16:30.250

Modified: 2026-10-25T12:16:30.373

Link: CVE-2026-116137

cve-icon Redhat

Severity : Low

Publid Date: 2026-10-25T11:51:01Z

Links: CVE-2026-116137 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T01:30:07Z

Weaknesses