Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2019-15845

24
FAUCET Score

CVE-2019-15845 describes a path checking vulnerability in Ruby's File.fnmatch functions, affecting Ruby versions 2.4.7, 2.5.6, and 2.6.4, as well as canonical Ruby and Ubuntu Linux distributions. Rated Medium severity (CVSS 6.5), this vulnerability allows for low impact to confidentiality and integrity with no impact to availability, requiring no user interaction or authentication for exploitation over the network. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.4.0, <= 2.4.7CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
>= 2.5.0, <= 2.5.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
>= 2.6.0, <= 2.6.4CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.32%
Probability of exploitation in next 30 days
EPSS Percentile
87.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0332 is in the 83rd percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

microsoftpatch availablevia msrc
Product: 17016-16820Fixed in: 2.6.7-1
microsoftpatch availablevia msrc
Product: cm1 ruby 2.6.7-1 on CBL Mariner 1.0Fixed in: 2.6.7-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 2.6.7-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 2.6.7-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: ruby:2.6-8020020220201131207.4cda2c84
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ruby25-ruby-0:2.5.9-9.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ruby26-ruby-0:2.6.7-119.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-ruby25-ruby-0:2.5.9-9.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-ruby25-ruby-0:2.5.9-9.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-ruby26-ruby-0:2.6.7-119.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:2.5-8040020200923213910.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:2.6-8040020210430142949.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: ruby:2.6-8010020220201152941.c27ad7f8
View patch
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3amp-system
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby24-ruby

Vendor Advisories (3)

microsoft2020-Sep/CVE-2019-15845

CVE-2019-15845

Sep 8, 2020
microsoft2019-Nov/CVE-2019-15845Moderate

Ruby through 2.4.7 2.5.x through 2.5.6 and 2.6.x through 2.6.4 mishandles path checking within File.fnmatch functions.

Nov 12, 2019
redhatCVE-2019-15845Moderate

ruby: NUL injection vulnerability of File.fnmatch and File.fnmatch?

Oct 1, 2019

References

lists.opensuse.org / opensuse-security-announce/2020-03/msg00041.html
hackerone.com / reports/449617
Third Party Advisory
lists.debian.org / debian-lts-announce/2019/11/msg00025.html
Mailing ListThird Party Advisory
seclists.org / bugtraq/2019/Dec/31
Mailing ListThird Party Advisory
seclists.org / bugtraq/2019/Dec/32
Mailing ListThird Party Advisory
security.gentoo.org / glsa/202003-06
usn.ubuntu.com / 4201-1
Third Party Advisory
debian.org / security/2019/dsa-4587
Third Party Advisory
oracle.com / security-alerts/cpujan2020.html
Third Party Advisory