CVE-2018-1002202
zip4j before 1.3.3 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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 12.6%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
zip4j before 1.3.3 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'.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS
- 12.64% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- zip4j project/zip4j
- Source
- report@snyk.io
EPSS moved from 11.0% on 20 September 2026 to 12.6% 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/snyk/zip-slip-vulnerabilityExploit, Third Party Advisory
- https://snyk.io/research/zip-slip-vulnerabilityExploit, Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-NETLINGALAZIP4J-31679Third Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03895en_usThird 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/SNYK-JAVA-NETLINGALAZIP4J-31679Third Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03895en_usThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.