CVE-2026-33202

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.

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