Description
The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | https://github.com/rails/rails | Fixed in 6.0.3.7, 6.1.3.2 | — |
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 | rails | 2:6.0.3.7+dfsg-1 | — |
| Debian 13 | rails | 2:6.0.3.7+dfsg-1 | — |
| Debian 12 | rails | 2:6.0.3.7+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rails | No fix yet | — |
| Ubuntu 26.04 LTS | rails | No fix yet | — |
| Ubuntu 25.10 | rails | No fix yet | — |
| Ubuntu 24.04 LTS | rails | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | rails | No fix yet | — |
| Ubuntu Pro 20.04 LTS | rails | No fix yet | — |
| Ubuntu Pro 18.04 LTS | rails | No fix yet | — |
| Ubuntu Pro 16.04 LTS | rails | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite Capsule 6 | foreman | 2.5.2.17-2.el7sat | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | python-aiohttp | 3.7.4-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | python-ecdsa +1 | 0.13.3-2.el7pc | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | python-pyyaml +1 | 5.4.1-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | python-urllib3 +1 | 1.26.5-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | python3-django | 2.2.24-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | satellite +1 | 6.10.0-3.el7sat | RHSA-2021:4702 |
| Red Hat Satellite Capsule 6 | tfm-rubygem-nokogiri | 1.11.3-2.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | candlepin | 4.0.9-1.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | foreman | 2.5.2.17-2.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | python-aiohttp | 3.7.4-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite 6 | python-ecdsa +1 | 0.13.3-2.el7pc | RHSA-2021:4702 |
| Red Hat Satellite 6 | python-pyyaml +1 | 5.4.1-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite 6 | python-urllib3 +1 | 1.26.5-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite 6 | python3-django | 2.2.24-1.el7pc | RHSA-2021:4702 |
| Red Hat Satellite 6 | satellite | 6.10.0-3.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | tfm-rubygem-activerecord-session_store | 2.0.0-1.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | tfm-rubygem-addressable | 2.8.0-1.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | tfm-rubygem-nokogiri | 1.11.3-2.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | tfm-rubygem-puma | 5.3.2-1.el7sat | RHSA-2021:4702 |
| Red Hat Satellite 6 | tfm-rubygem-rails +1 | 6.0.3.7-1.el7sat | RHSA-2021:4702 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rubygem-actionpack-6.0 | 6.0.4.4-1.1 | openSUSE-SU-2024:11821-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | actionpack | >= 6.0.0, < 6.0.3.7 | 6.0.3.7 | GHSA-g8ww-46x2-2p65 |
| RubyGems | actionpack | >= 6.1.0, < 6.1.3.2 | 6.1.3.2 | GHSA-g8ww-46x2-2p65 |
Advisories 3
- RHSA-2021:4702 Red Hat Security Advisory: Satellite 6.10 Release Red Hat Security Advisories (RHSA) · Oct 13, 2026
- openSUSE-SU-2024:11821-1 ruby3.1-rubygem-actionpack-6.0-6.0.4.4-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-0341 Ruby on Rails: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 8, 2022