Description
adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the last duplicate while extractAllTo() writes the first, causing unvalidated bytes to be written to disk.
Published: 2026-10-21
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-694
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 21 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Description adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the last duplicate while extractAllTo() writes the first, causing unvalidated bytes to be written to disk.
Title adm-zip before 0.6.1 Duplicate ZIP Entry Name Validation Bypass
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': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Adm-zip Project Adm-zip
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-21T00:37:05.291Z

Reserved: 2026-10-20T21:47:43.313Z

Link: CVE-2026-114104

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-21T01:17:36.220

Modified: 2026-10-21T01:17:36.333

Link: CVE-2026-114104

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-21T00:37:05Z

Links: CVE-2026-114104 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T10:41:51Z

Weaknesses
  • CWE-436

    Interpretation Conflict

  • CWE-694

    Use of Multiple Resources with Duplicate Identifier