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Vulnerability record · CVE-2018-6914 · published 3 April 2018

CVE-2018-6914: Ruby-lang ruby path traversal vulnerability

Ruby Lang · Ruby

Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument.

7.5 CVSS 3.0 High EPSS 10% · top 4.5% CWE-22 · Path traversal
7.5CVSS 3.0 base score, v2 5.0
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
34References
17 Jun 2026Last modified by NVD

Description

Directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library in Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 might allow attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
http://www.securityfocus.com/bid/103686 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042004 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3729 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3730 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3731 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2028
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/3626-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4259 Third Party Advisory
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/unintentional-file-and-directory-creation-with-directory-traversal-cve-2018 Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
http://www.securityfocus.com/bid/103686 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042004 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3729 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3730 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3731 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2028
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00024.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/3626-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4259 Third Party Advisory
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/ PatchRelease Notes
https://www.ruby-lang.org/en/news/2018/03/28/unintentional-file-and-directory-creation-with-directory-traversal-cve-2018 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-6914), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.