Description
RubyGems version 2.6.12 and earlier fails to validate specification names, allowing a maliciously crafted gem to potentially overwrite any file on the filesystem.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| HackerOne | RubyGems | Versions before 2.6.13 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rubygems | 3.2.0~rc.1-1 | — |
| Debian 13 | rubygems | 3.2.0~rc.1-1 | — |
| Debian 12 | rubygems | 3.2.0~rc.1-1 | — |
| Debian 9 | ruby2.3 | 2.3.3-1+deb9u1 | DSA-3966-1 |
| Debian 8 | ruby2.1 | 2.1.5-2+deb8u4 | DLA-1421-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | ruby1.9.1 | 1.9.3.194-8.1+deb7u6 | DLA-1114-1 |
| Debian 7 | rubygems | 1.8.24-1+deb7u1 | DLA-1112-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | jruby | No fix yet | — |
| Ubuntu 26.04 LTS | jruby | No fix yet | — |
| Ubuntu 25.10 | jruby | No fix yet | — |
| Ubuntu 24.04 LTS | jruby | No fix yet | — |
| Ubuntu 20.04 LTS | jruby | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | jruby | No fix yet | — |
| Ubuntu 16.04 LTS | jruby | No fix yet | — |
| Ubuntu 16.04 LTS | ruby2.3 | 2.3.1-2~16.04.6 | USN-3685-1, USN-3553-1 |
| Ubuntu 14.04 LTS | ruby1.9.1 | 1.9.3.484-2ubuntu1.5 | USN-3685-1, USN-3439-1 |
| Ubuntu 14.04 LTS | ruby2.0 | 2.0.0.484-1ubuntu2.10 | USN-3685-1 |
| Ubuntu Pro 14.04 LTS | jruby | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ruby +5 | 2.0.0.648-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-bigdecimal | 1.2.0-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-io-console | 0.4.2-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-json | 1.7.7-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-minitest | 4.3.2-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-psych | 2.0.0-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-rake | 0.9.6-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygem-rdoc | 4.0.0-33.el7_4 | RHSA-2018:0378 |
| RHEL 7 | rubygems +1 | 2.0.14.1-33.el7_4 | RHSA-2018:0378 |
| RHEL 3 | rh-ruby22-ruby +5 | 2.2.9-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-bigdecimal | 1.2.6-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-io-console | 0.4.3-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-json | 1.8.1.1-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-minitest | 5.4.3-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-power_assert | 0.2.2-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-psych | 2.0.8.1-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-rake | 10.4.2-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-rdoc | 4.2.0-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygem-test-unit | 3.0.8-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby22-rubygems +1 | 2.4.5.4-19.el6 | RHSA-2018:0583 |
| RHEL 3 | rh-ruby23-ruby +5 | 2.3.6-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-bigdecimal | 1.2.8-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-did_you_mean | 1.0.0-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-io-console | 0.4.5-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-json | 1.8.3.1-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-minitest | 5.8.5-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-net-telnet | 0.1.1-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-power_assert | 0.2.6-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-psych | 2.1.0.1-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-rake | 10.4.2-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-rdoc | 4.2.1-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygem-test-unit | 3.1.5-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby23-rubygems +1 | 2.5.2.2-67.el6 | RHSA-2018:0585 |
| RHEL 3 | rh-ruby24-ruby +4 | 2.4.2-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-bigdecimal | 1.3.0-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-did_you_mean | 1.1.0-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-io-console | 0.4.6-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-json | 2.0.4-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-minitest | 5.10.1-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-net-telnet | 0.1.1-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-openssl | 2.0.5-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-power_assert | 0.4.1-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-psych | 2.2.2-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-rake | 12.0.0-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-rdoc | 5.0.0-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-test-unit | 3.2.3-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygem-xmlrpc | 0.2.1-86.el6 | RHSA-2017:3485 |
| RHEL 3 | rh-ruby24-rubygems +1 | 2.6.14-86.el6 | RHSA-2017:3485 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP4 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP3 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP2 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES 12 SP2 | yast2-ruby-bindings | 3.1.53-9.8.1 | SUSE-SU-2020:1570-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP4 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP3 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP2 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SLES for SAP 12 SP2 | yast2-ruby-bindings | 3.1.53-9.8.1 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud Crowbar 8 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud 8 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud 7 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE OpenStack Cloud 7 | yast2-ruby-bindings | 3.1.53-9.8.1 | SUSE-SU-2020:1570-1 |
| SUSE HPE Helion OpenStack 8 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
| SUSE Enterprise Storage 5 | ruby2.1 | 2.1.9-19.3.2 | SUSE-SU-2020:1570-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ruby | 2.4.2-r0 | — |
| Alpine v3.23 | ruby | 2.4.2-r0 | — |
| Alpine v3.22 | ruby | 2.4.2-r0 | — |
| Alpine v3.21 | ruby | 2.4.2-r0 | — |
| Alpine v3.20 | ruby | 2.4.2-r0 | — |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ruby | 2.4.2-r0 | — |
| Alpine v3.18 | ruby | 2.4.2-r0 | — |
| Alpine v3.17 | ruby | 2.4.2-r0 | — |
| Alpine v3.16 | ruby | 2.4.2-r0 | — |
| Alpine v3.15 | ruby | 2.4.2-r0 | — |
| Alpine v3.14 | ruby | 2.4.2-r0 | — |
| Alpine v3.13 | ruby | 2.4.2-r0 | — |
| Alpine v3.12 | ruby | 2.4.2-r0 | — |
| Alpine v3.11 | ruby | 2.4.2-r0 | — |
| Alpine v3.10 | ruby | 2.4.2-r0 | — |
| Alpine v3.9 | ruby | 2.4.2-r0 | — |
| Alpine v3.8 | ruby | 2.4.2-r0 | — |
| Alpine v3.7 | ruby | 2.4.2-r0 | — |
| Alpine v3.6 | ruby | 2.4.2-r0 | — |
| Alpine v3.6 | ruby2.2 | 2.2.8-r0 | — |
| Alpine v3.5 | ruby | 2.3.5-r0 | — |
| Alpine v3.5 | ruby2.2 | 2.2.8-r0 | — |
| Alpine v3.4 | ruby | 2.3.5-r0 | — |
| Alpine v3.3 | ruby | 2.2.8-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ruby +5 | 2.0.0.648-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-bigdecimal | 1.2.0-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-io-console | 0.4.2-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-json | 1.7.7-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-minitest | 4.3.2-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-psych | 2.0.0-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-rake | 0.9.6-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygem-rdoc | 4.0.0-33.el7_4 | ELSA-2018-0378 |
| Oracle Linux 7 | rubygems +1 | 2.0.14.1-33.el7_4 | ELSA-2018-0378 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- RubyGems < 2.6.13 - Arbitrary File Overwrite EDB-42611 · local · Sep 4, 2017 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | rubygems-update | < 2.6.13 | 2.6.13 | GHSA-pm9x-4392-2c2p |
Advisories 14
- RHSA-2018:0585 Red Hat Security Advisory: rh-ruby23-ruby security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0583 Red Hat Security Advisory: rh-ruby22-ruby security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:0378 Red Hat Security Advisory: ruby security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:3485 Red Hat Security Advisory: rh-ruby24-ruby security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- WID-SEC-2026-1421 Ruby: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 7, 2026
- USN-3685-1 ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-3439-1 ruby1.9.1 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-3553-1 ruby2.3 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-3966-1 ruby2.3 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1112-1 rubygems - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1114-1 ruby1.9.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1421-1 ruby2.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:1570-1 Security update for ruby2.1 SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2018-0378 Important: ruby security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 28, 2018
References
- USN-3685-1 vendor-advisory
- USN-3553-1 vendor-advisory
- RHSA-2018:0585 vendor-advisory
- DSA-3966 vendor-advisory
- RHSA-2018:0378 vendor-advisory
- 42611 exploit
- 1039249 vdb-entry
- https://hackerone.com/reports/243156
- RHSA-2017:3485 vendor-advisory
- https://github.com/rubygems/rubygems/commit/ad5c0a53a86ca5b218c7976765c0365b91d22cb2
- [debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update mailing-list
- RHSA-2018:0583 vendor-advisory
- GLSA-201710-01 vendor-advisory
- 100580 vdb-entry
- http://blog.rubygems.org/2017/08/27/2.6.13-released.html