GitHub Advisoryadvisory · RubyGems
GHSA-73f9-jhhh-hr5m Rails Active Storage has possible glob injection in its DiskService
MEDIUM
Official page ↗
- Aliases
- CVE-2026-33202
- Ecosystem
- RubyGems
- Packages
- activestorage
- Severity
- Moderate
- CVSS vector
- CVSS: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:U
- Weaknesses
- CWE-74
- Reviewed
- 2026-03-23
Affected packages
• RubyGems activestorage: >= 8.1.0.beta1, < 8.1.2.1 → fixed in 8.1.2.1
• RubyGems activestorage: >= 8.0.0.beta1, < 8.0.4.1 → fixed in 8.0.4.1
• RubyGems activestorage: < 7.2.3.1 → fixed in 7.2.3.1
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
Alias · CVE (1)
- CVE-2026-33202 Active Storage allows users to attach cloud and local files in Rails applications. vulnerability
Weakness · CWE (1)
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness
References
- https://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5m web
- https://nvd.nist.gov/vuln/detail/CVE-2026-33202 advisory
- https://github.com/rails/rails/commit/8c9676b803820110548cdb7523800db43bc6874c web
- https://github.com/rails/rails/commit/955284d26e469a9c026a4eee5b21f0414ab0bccf web
- https://github.com/rails/rails/commit/fa19073546360856e9f4dab221fc2c5d73a45e82 web
- https://github.com/rails/rails package
- https://github.com/rails/rails/releases/tag/v7.2.3.1 web
- https://github.com/rails/rails/releases/tag/v8.0.4.1 web
- https://github.com/rails/rails/releases/tag/v8.1.2.1 web
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33202.yml web