Permission Assignment Flaw in Adm-zip Affects File Extraction Security
CVE-2026-114105

6.9MEDIUM

Key Information:

Vendor

Cthackers

Status
Adm-zip
Vendor
CVE Published:
21 October 2026

What is CVE-2026-114105?

The Adm-zip library prior to version 0.6.1 contains a vulnerability that allows unauthorized permission assignments. This occurs when the 'keepOriginalPermission' feature is enabled, enabling attackers to craft zip files with malicious external file attributes. These attributes can bypass necessary security measures during extraction, potentially allowing attackers to elevate privileges. If extracted while running as root, crafted executables could gain escalated rights, exposing systems to abuse and risk. It's essential for users to update to the latest version to mitigate these risks.

Affected Version(s)

adm-zip 0 < 0.6.1

adm-zip 0.6.1

References

https://github.com/cthackers/adm-zip/security/advisories/...
vendor-advisory
https://www.vulncheck.com/advisories/adm-zip-before-0.6.1...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

KovachVL
.