CVE-2026-33202: Rubyonrails Rails

Critical severity, CVSS 9.1. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Rubyonrails Rails: before 7.2.3.1 (fixed in 7.2.3.1); from 8.0.0, before 8.0.4.1 (fixed in 8.0.4.1); from 8.1.0, before 8.1.2.1 (fixed in 8.1.2.1)

Published 2026-03-24. Last modified 2026-06-17.