CVE-2018-1002204 is a medium-severity (CVSS 5.5) Path Traversal vulnerability in adm-zip. 4 public exploit references exist, so weaponization risk is real. A fix is available for adm-zip — see the affected versions and patch details below.
Arbitrary File Write in adm-zip
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2018-1002204 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 394,803 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
adm-zipnpmDescription
adm-zip npm library before 0.4.9 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) in a Zip archive entry that is mishandled during extraction. This vulnerability is also known as 'Zip-Slip'.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | adm-zip | all versions | 0.4.11npm install adm-zip@0.4.11 |
Affected Products
adm-zipadm-zip_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
adm-zip npm library before 0.4.9 is vulnerable to directory traversal, a…
adm-zip npm library before 0.4.9 is vulnerable to directory traversal, a…
adm-zip npm library before 0.4.9 is vulnerable to directory traversal, a…
adm-zip npm library before 0.4.9 is vulnerable to directory traversal, a…
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for adm-zip, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update adm-zip to 0.4.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1002204 is resolved across your whole dependency graph.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.
Frequently Asked Questions
Is CVE-2018-1002204 in your dependencies?
Find it across npm, including transitive dependencies.