Rails Active Storage has possible glob injection in its DiskService
Published: March 23, 2026
SECURITY IDENTIFIERS
- CVE: CVE-2026-33202 (NVD)
- GHSA: GHSA-73f9-jhhh-hr5m
- Vendor Advisory: https://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5m
GEM
FRAMEWORK
PATCHED VERSIONS
~> 7.2.3, >= 7.2.3.1
~> 8.0.4, >= 8.0.4.1
>= 8.1.2.1
DESCRIPTION
Impact
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.
Releases
The fixed releases are available at the normal locations.
RELATED
- https://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5m
- 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
- https://github.com/rails/rails/releases/tag/v8.1.2.1