CVSS 4.0
6.6 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:UCVE-2026-33202
Medium (6.6) in rubyonrails rails. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in activestorage 7.2.3.1, 8.0.4.1, 8.1.2.1.
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 `DiskService#delete_prefixed` passes blob keys directly to `Dir.glob` without escaping glob metacharacters. If a blob key contains attacker-controlled input or custom-generated keys with glob metacharacters, it may be possible to delete unintended files from the storage directory. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Severity
CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- rubyonrails:rails
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-73f9-jhhh-hr5m | RubyGems | activestorage | >=8.1.0.beta1 <8.1.2.1 | 8.1.2.1 |
| GHSA-73f9-jhhh-hr5m | RubyGems | activestorage | >=8.0.0.beta1 <8.0.4.1 | 8.0.4.1 |
| GHSA-73f9-jhhh-hr5m | RubyGems | activestorage | <7.2.3.1 | 7.2.3.1 |
References
- https://github.com/rails/rails/commit/8c9676b803820110548cdb7523800db43bc6874c
- https://github.com/rails/rails/commit/955284d26e469a9c026a4eee5b21f0414ab0bccf
- https://github.com/rails/rails/commit/fa19073546360856e9f4dab221fc2c5d73a45e82
- https://github.com/rails/rails/releases/tag/v7.2.3.1
- https://github.com/rails/rails/releases/tag/v8.0.4.1