VulnerabilityModified

CVE-2018-1002203

unzipper npm library before 0.8.13 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.

MEDIUM 5.5EPSS 10.6%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 10.6%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

CVSS 3.0: 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS: 10.55% probability · 96th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-22
Affected: unzipper project/unzipper
Source: report@snyk.io

EPSS trend

EPSS moved from 10.6% on 20 September 2026 to 10.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

https://github.com/ZJONSSON/node-unzipper/commit/2220ddd5b58f6252069a4f99f9475441ad0b50cdIssue Tracking, Patch, Third Party Advisory
https://github.com/ZJONSSON/node-unzipper/pull/59Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/snyk/zip-slip-vulnerabilityExploit, Third Party Advisory
https://snyk.io/research/zip-slip-vulnerabilityExploit, Issue Tracking, Patch, Third Party Advisory
https://snyk.io/vuln/npm:unzipper:20180415Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/ZJONSSON/node-unzipper/commit/2220ddd5b58f6252069a4f99f9475441ad0b50cdIssue Tracking, Patch, Third Party Advisory
https://github.com/ZJONSSON/node-unzipper/pull/59Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/snyk/zip-slip-vulnerabilityExploit, Third Party Advisory
https://snyk.io/research/zip-slip-vulnerabilityExploit, Issue Tracking, Patch, Third Party Advisory
https://snyk.io/vuln/npm:unzipper:20180415Exploit, Issue Tracking, Patch, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.