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TI-2019-05973 Aliases CVE-2019-8320GHSA-5x32-c9mf-49cc

A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2.

Priority LOW 39CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · High · High
Fix status
Partial Red Hat: 9 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

A Directory Traversal issue was discovered in RubyGems 2.7.6 and later through 3.0.2. Before making new directories or touching files (which now include path-checking code for symlinks), it would delete the target destination. If that destination was hidden behind a symlink, a malicious gem could delete arbitrary files on the user's machine, presuming the attacker could guess at paths. Given how frequently gem is run as sudo, and how predictable paths are on modern systems (/tmp, /usr, etc.), this could likely lead to data loss or an unusable system.

Why it matters now

EPSS 0.04193 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial rubygems-update (RubyGems): 2.7.9, 3.0.3Red Hat: 3 advisoriesRed Hat: 9 fixed, 1 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—rubygems-update (RubyGems)2.7.6 to before 2.7.92.7.9Patch availableGHSA-5x32-c9mf-49cc
—rubygems-update (RubyGems)3.0.0 to before 3.0.33.0.3Patch availableGHSA-5x32-c9mf-49cc
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • rubygems-update (RubyGems) Vendor— Affected 2.7.6 to before 2.7.9 Fixed in 2.7.9 Patch available GHSA-5x32-c9mf-49cc
  • rubygems-update (RubyGems) Vendor— Affected 3.0.0 to before 3.0.3 Fixed in 3.0.3 Patch available GHSA-5x32-c9mf-49cc

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*2.7.6 – 3.0.2Vulnerablerubygems
  • cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:* Versions 2.7.6 – 3.0.2 Vulnerable ·rubygems

Remediation

  • Fix · GHSA-5x32-c9mf-49cc rubygems-update (RubyGems) Fixed in 2.7.9 Advisory →
  • Fix · GHSA-5x32-c9mf-49cc rubygems-update (RubyGems) Fixed in 3.0.3 Advisory →

Red Hat 3 advisories

  • RHSA-2019:1429 Released 2019-06-11 · Red Hat rating Important
    CloudForms 4.7.5 security, bug fix and enhancement update
    • CloudForms Management Engine 5.10 cfme-5.10.5.1-1.el7cf, cfme-amazon-smartstate-5.10.5.1-1.el7cf, cfme-appliance-5.10.5.1-1.el7cf +22
  • RHSA-2019:1150 Released 2019-05-13 · Red Hat rating Important
    rh-ruby24-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-ruby24-ruby-2.4.6-92.el6, rh-ruby24-ruby-devel-2.4.6-92.el6, rh-ruby24-ruby-doc-2.4.6-92.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby24-ruby-2.4.6-92.el7, rh-ruby24-ruby-devel-2.4.6-92.el7, rh-ruby24-ruby-doc-2.4.6-92.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby24-ruby-2.4.6-92.el7, rh-ruby24-ruby-devel-2.4.6-92.el7, rh-ruby24-ruby-doc-2.4.6-92.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-ruby24-ruby-2.4.6-92.el7, rh-ruby24-ruby-devel-2.4.6-92.el7, rh-ruby24-ruby-doc-2.4.6-92.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-ruby24-ruby-2.4.6-92.el7, rh-ruby24-ruby-devel-2.4.6-92.el7, rh-ruby24-ruby-doc-2.4.6-92.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-ruby24-ruby-2.4.6-92.el6, rh-ruby24-ruby-devel-2.4.6-92.el6, rh-ruby24-ruby-doc-2.4.6-92.el6 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby24-ruby-2.4.6-92.el7, rh-ruby24-ruby-devel-2.4.6-92.el7, rh-ruby24-ruby-doc-2.4.6-92.el7 +17
  • RHSA-2019:1148 Released 2019-05-13 · Red Hat rating Important
    rh-ruby25-ruby security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-ruby25-ruby-2.5.5-7.el7, rh-ruby25-ruby-devel-2.5.5-7.el7, rh-ruby25-ruby-doc-2.5.5-7.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-ruby25-ruby-2.5.5-7.el7, rh-ruby25-ruby-devel-2.5.5-7.el7, rh-ruby25-ruby-doc-2.5.5-7.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-ruby25-ruby-2.5.5-7.el7, rh-ruby25-ruby-devel-2.5.5-7.el7, rh-ruby25-ruby-doc-2.5.5-7.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-ruby25-ruby-2.5.5-7.el7, rh-ruby25-ruby-devel-2.5.5-7.el7, rh-ruby25-ruby-doc-2.5.5-7.el7 +17
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-ruby25-ruby-2.5.5-7.el7, rh-ruby25-ruby-devel-2.5.5-7.el7, rh-ruby25-ruby-doc-2.5.5-7.el7 +17

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
CloudForms Management Engine 5.10Fixed RHSA-2019:1429
Red Hat Enterprise Linux AppStream (v. 8)Fixed—
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:1150
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1148, RHSA-2019:1150
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2019:1148, RHSA-2019:1150
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2019:1148, RHSA-2019:1150
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2019:1148, RHSA-2019:1150
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:1150
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1148, RHSA-2019:1150
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Software Collections

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-8320
  2. 2026-10-03 Alias added: GHSA-5x32-c9mf-49cc

References

Exploit 1

Advisory 4

Other 3

  • TI-2017-00851 Deserialization of untrusted data in HackerOne RubyGems CVSS 3.0CRITICAL 9.8
  • TI-2017-00849 Path traversal in HackerOne RubyGems CVSS 3.0HIGH 7.5
  • TI-2017-00847 Code injection in HackerOne RubyGems CVSS 3.0CRITICAL 9.8
  • TI-2018-15731 RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier… CVSS 3.0CRITICAL 9.8
  • TI-2019-05977 An issue was discovered in RubyGems 2.6 and later through 3.0.2. CVSS 3.1HIGH 8.8
  • TI-2017-00848 RubyGems version 2.6.12 and earlier is vulnerable to maliciously crafted gem… CVSS 3.0HIGH 7.5
See all 24 →

Sources

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