Incorrect Permission Assignment for Critical Resource Affecting adm-zip package, versions <0.6.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-ADMZIP-21281980
- published21 Oct 2026
- disclosed21 Oct 2026
- creditVladislav Ryashchikov
Introduced: 21 Oct 2026
NewCVE-2026-114105 (opens in a new tab)How to fix?
Upgrade adm-zip to version 0.6.1 or higher.
Overview
adm-zip is a JavaScript implementation for zip data compression for NodeJS.
Affected versions of this package are vulnerable to Incorrect Permission Assignment for Critical Resource via the fileAttr getter in headers/entryHeader.js, which preserves setuid, setgid, and sticky bits from archive metadata when extracting files with the keepOriginalPermission option. An attacker who controls a zip archive can embed a file with the setuid bit set, and when that archive is extracted as root, the resulting file inherits the setuid-root permission, enabling local privilege escalation.