Vulnerability in Cthackers Adm-Zip
CVE-2026-102282
adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, adm-zip applies the Unix permission bits stored in a zip entry directly to the extracted file via `fs.chmodSync()` when `keepOriginalPermission=true` is passed to `extractAllTo()`/`extractEntryTo()` — and it never filters the setuid/setgid/sticky bits out of those bits. A zip crafted by an attacker can therefore produce an extracted binary with mode `04755`. When extraction runs as root (the default posture in Docker builds, CI runners, and privileged install steps — the exact environments where this flag is used), the resulting root-owned setuid file is executed later by a lesser-privileged user, turning the attacker's code into a root execution. Version 0.6.1 fixes the issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Cthackers Adm-Zip — versions < 0.6.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-102282?
- CVE-2026-102282 is a high-severity vulnerability in Cthackers Adm-Zip, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.1/10. Published 2026-10-05.
- How severe is CVE-2026-102282?
- High severity. CVSS v3 base score is 7.1 out of 10.