DotNetZip Zip-Slip Vulnerability

published 2018-07-25 8 y ago modified 2026-09-10 1 mo ago also GHSA-7378-6268-4278 , EUVD-2018-0529

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 10.4%; EPSS 10.4% chance of exploitation in 30 days, percentile 95%
public exploits: 0; none known

DotNetZip.Semvered before 1.11.0 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'.

Patch / fix

fixed in 2 links 2

nuget DotNetZip 1.11.0
DotNetZip DotNetZip.Semvered 1.11.0

github.com/haf/DotNetZip.Semverd@55d2c13 commit
github.com/haf/DotNetZip.Semverd#121 pull request

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-262-03 updated 2023-09-19 cvss 5.5

Omron Engineering Software Zip-Slip

Omron NX-IO Configurator <= 1.22 Omron Sysmac Studio <= 1.54
affected: mitigation “OMRON recommends the following general mitigation measures to minimize the risk of vulnerability exploitation:” fa.omron.co.jp

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-23)

Exploit prediction

10.39% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
nuget	DotNetZip	<1.11.0	1.11.0

Affected products

DotNetZip DotNetZip.Semvered

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /haf/DotNetZip.Semverd/commit/55d2c13c0cc64654e18fcdd0038fdb3d7458e366
web, patch
github.com /haf/DotNetZip.Semverd/pull/121
web, patch
snyk.io /research/zip-slip-vulnerability
web, third-party-advisory
github.com /snyk/zip-slip-vulnerability
web, third-party-advisory
snyk.io /vuln/SNYK-DOTNET-DOTNETZIP-60245
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-1002205
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary