CVE-2018-1002204: adm-zip npm library before 0.4.9 is vulnerable to directory traversal, allowing attackers to write to arbitrar

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MEDIUM 5.5UPGRADE

CVE-2018-1002204 is a medium-severity flaw (CVSS 5.5) affecting adm-zip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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'.

Why this priority

EPSS top 4%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	13.5% (top 4%)
CISA exploited list	No
Weakness	CWE-22
Published	2018-07-25
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: adm-zip project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-25 17:29 UTCPublished CVE record published
2026-06-17 01:33 UTCUpdated Record last modified

adm-zip project adm-zip UPGRADE

Affected: < 0.4.9

Fixed in: 0.4.9

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls adm-zip

2. UPGRADE to 0.4.9

npm install adm-zip@">=0.4.9"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-1002204?

adm-zip: upgrade to 0.4.9. Exact commands for each OS are on this page.

Is CVE-2018-1002204 being exploited?

CVE-2018-1002204 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-1002204 affect?

CVE-2018-1002204 affects adm-zip. Severity is medium (CVSS 5.5). 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

How urgent is CVE-2018-1002204?

Priority 48/100. EPSS top 4%: very likely to be exploited; Public exploit reference

References

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