Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rubyonrails | Rails | < 7.2.3.1 |
Related Weaknesses (CWE)
References
- https://github.com/rails/rails/commit/8c9676b803820110548cdb7523800db43bc6874cPatch
- https://github.com/rails/rails/commit/955284d26e469a9c026a4eee5b21f0414ab0bccfPatch
- https://github.com/rails/rails/commit/fa19073546360856e9f4dab221fc2c5d73a45e82Patch
- https://github.com/rails/rails/releases/tag/v7.2.3.1Release Notes
- https://github.com/rails/rails/releases/tag/v8.0.4.1Release Notes
- https://github.com/rails/rails/releases/tag/v8.1.2.1Release Notes
- https://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5mVendor Advisory
FAQ
What is CVE-2026-33202?
CVE-2026-33202 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 dire...
How severe is CVE-2026-33202?
CVE-2026-33202 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-33202?
Check the references section above for vendor advisories and patch information. Affected products include: Rubyonrails Rails.