GHSA-p9fm-f462-ggrgLowCVSS 6.5
Rails Active Storage has a possible DoS vulnerability in proxy mode via multi-range requests
🔗 CVE IDs covered (1)
📋 Description
Impact
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.
Releases
The fixed releases are available at the normal locations.
Credit
This issue was responsibly reported by Hackerone researcher thwin_htet.
🎯 Affected products3
- rubygems/activestorage:>= 8.1.0, < 8.1.2.1
- rubygems/activestorage:>= 8.0.0, < 8.0.4.1
- rubygems/activestorage:< 7.2.3.1
🔗 References (7)
- https://github.com/rails/rails/security/advisories/GHSA-p9fm-f462-ggrg
- https://nvd.nist.gov/vuln/detail/CVE-2026-33658
- https://github.com/rails/rails/releases/tag/v7.2.3.1
- https://github.com/rails/rails/releases/tag/v8.0.4.1
- https://github.com/rails/rails/releases/tag/v8.1.2.1
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33658.yml
- https://github.com/advisories/GHSA-p9fm-f462-ggrg