RubyGems/activestorage CVE-2026-33173: medium, EPSS 0.40%
Rails Active Storage has possible content type bypass via metadata in direct uploads
Action: Upgrade activestorage to 7.2.3.1 or later.
bundle update activestorageAffected
| introduced | fixed | last affected |
|---|---|---|
| 8.1.0.beta1 | 8.1.2.1 | - |
| 8.0.0.beta1 | 8.0.4.1 | - |
| 0 | 7.2.3.1 | - |
Fixed versions
| 8.1.2.1 | 8.0.4.1 | 7.2.3.1 |
Sources
- osv: GHSA-qcfx-2mfw-w4cg
- https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg
- https://nvd.nist.gov/vuln/detail/CVE-2026-33173
- https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53
- https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e
- https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0
- https://github.com/rails/rails
- 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-2026-33173.yml
CVE-2026-33173 · published · modified · JSON