Read the docs
TI-2019-02891 Aliases CVE-2019-3881GHSA-g98m-96g9-wfjq

Uncontrolled search path in rubygem-bundler

Priority LOW 35CWE-427Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution, Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 4 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-427 and CWE-552.

Summary

Bundler prior to 2.1.0 uses a predictable path in /tmp/, created with insecure permissions as a storage location for gems, if locations under the user's home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed.

Why it matters now

EPSS 0.00529 44th percentileScored 2026-11-07
Fix Partial bundler (RubyGems): 2.1.0Red Hat: 2 advisoriesRed Hat: 4 fixed, 3 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—rubygem-bundlerbundler versions before 2.1.0—No fix listedCNA
—bundler (RubyGems)1.14.0 to before 2.1.02.1.0Patch availableGHSA-g98m-96g9-wfjq
  • rubygem-bundler Vendor— Affected bundler versions before 2.1.0 Fixed in — No fix listed CNA
  • bundler (RubyGems) Vendor— Affected 1.14.0 to before 2.1.0 Fixed in 2.1.0 Patch available GHSA-g98m-96g9-wfjq

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:bundler:bundler:*:*:*:*:*:ruby:*:*before 2.1.0VulnerableBundler
  • cpe:2.3:a:bundler:bundler:*:*:*:*:*:ruby:*:* Versions before 2.1.0 Vulnerable ·Bundler

Remediation

  • Fix · GHSA-g98m-96g9-wfjq bundler (RubyGems) Fixed in 2.1.0 Advisory →

Red Hat 2 advisories

  • RHSA-2021:2588 Released 2021-06-29 · Red Hat rating Moderate
    ruby:2.6 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) ruby-2.6.7-107.module+el8.4.0+10830+bbd85cce.aarch64::ruby:2.6, ruby-2.6.7-107.module+el8.4.0+10830+bbd85cce.i686::ruby:2.6, ruby-2.6.7-107.module+el8.4.0+10830+bbd85cce.ppc64le::ruby:2.6 +47
  • RHSA-2021:2230 Released 2021-06-03 · Red Hat rating Moderate
    rh-ruby26-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby26-ruby-2.6.7-119.el7, rh-ruby26-ruby-devel-2.6.7-119.el7, rh-ruby26-ruby-doc-2.6.7-119.el7 +18
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-ruby26-ruby-2.6.7-119.el7, rh-ruby26-ruby-devel-2.6.7-119.el7, rh-ruby26-ruby-doc-2.6.7-119.el7 +18
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby26-ruby-2.6.7-119.el7, rh-ruby26-ruby-devel-2.6.7-119.el7, rh-ruby26-ruby-doc-2.6.7-119.el7 +18

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat 3scale API Management Platform 2AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:2588
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:2230
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2021:2230
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:2230
Not affected: 4 products
  • Red Hat Enterprise Linux 7
  • Red Hat Software Collections
  • Red Hat Storage 3
  • Red Hat Subscription Asset Manager

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-3881
  2. 2026-10-03 Alias added: GHSA-g98m-96g9-wfjq

References

Patch 1

Advisory 2

Other 4

  • TI-2016-06685 Bundler 1.x might allow remote attackers to inject arbitrary Ruby code into an… CVSS 3.0CRITICAL 9.8
  • TI-2020-18610 Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency… CVSS 3.1HIGH 8.8
  • TI-2021-19615 Local Code Execution through Argument Injection via dash leading git url parameter in Gemfile CVSS 3.1HIGH 7.3
  • TI-2013-00264 Bundler before 1.7, when multiple top-level source lines are used, allows remote… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences