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.
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

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

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