CVE-2026-33658
Fixed in a distro release EPSS <1%CVSS 2.3
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 Active Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Products: Rails activestorage
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| RubyGems | activestorage | 8.1.2.1 |
| RubyGems | activestorage | 8.0.4.1 |
| RubyGems | activestorage | 7.2.3.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | gitlab-rails-ce-18.1 | no fix |
| Chainguard | gitlab-rails-ce-18.10 | 18.10.3-r1 |
| Chainguard | gitlab-rails-ce-18.2 | no fix |
| Chainguard | gitlab-rails-ce-18.3 | no fix |
| Chainguard | gitlab-rails-ce-18.4 | no fix |
| Chainguard | gitlab-rails-ce-18.5 | no fix |
| Chainguard | gitlab-rails-ce-18.6 | no fix |
| Chainguard | gitlab-rails-ce-18.7 | no fix |
| Chainguard | gitlab-rails-ce-18.8 | 18.8.11-r4 |
| Chainguard | gitlab-rails-ce-18.9 | 18.9.5-r0 |
| Chainguard | gitlab-rails-ce-fips-18.1 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.10 | 18.10.3-r0 |
| Chainguard | gitlab-rails-ce-fips-18.2 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.3 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.4 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.5 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.6 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.7 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.8 | no fix |
| Chainguard | gitlab-rails-ce-fips-18.9 | 18.9.5-r0 |
| Chainguard | ruby3.2-rails-7.1 | no fix |
| Chainguard | ruby3.3-rails-7.1 | no fix |
| Chainguard | ruby3.4-rails-7.1 | no fix |
| Chainguard | ruby3.4-rails-8.0 | 8.0.5-r0 |
| Chainguard | ruby4.0-rails-7.1 | no fix |
| Debian 13 | rails | 2:7.2.2.2+dfsg-2~deb13u2 |
| Debian 14 | rails | 2:7.2.3.1+dfsg-1 |
| Ubuntu 24.04 LTS | rails | no fix |
| Ubuntu 25.10 | rails | no fix |
| Ubuntu 26.04 LTS | rails | no fix |
| Ubuntu 26.10 | rails | no fix |
| Ubuntu Pro 16.04 LTS | rails | no fix |
| Ubuntu Pro 18.04 LTS | rails | no fix |
| Ubuntu Pro 20.04 LTS | rails | no fix |
| Ubuntu Pro 22.04 LTS | rails | no fix |