CVE-2026-33202
CRITICAL9.1EPSS 0.03%Rails Active Storage has possible glob injection in its DiskService
Published: 3/23/2026Modified: 5/13/2026
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.
Affected packages (2)
- Debian/railsfrom 0
- RubyGems/activestorage>= 8.1.0.beta1, < 8.1.2.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
References (11)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-33202
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-33202
- PATCHhttps://github.com/rails/rails
- WEBhttps://github.com/rails/rails/commit/8c9676b803820110548cdb7523800db43bc6874c
- WEBhttps://github.com/rails/rails/commit/955284d26e469a9c026a4eee5b21f0414ab0bccf
- WEBhttps://github.com/rails/rails/commit/fa19073546360856e9f4dab221fc2c5d73a45e82
- WEBhttps://github.com/rails/rails/releases/tag/v7.2.3.1
- WEBhttps://github.com/rails/rails/releases/tag/v8.0.4.1
- WEBhttps://github.com/rails/rails/releases/tag/v8.1.2.1
- WEBhttps://github.com/rails/rails/security/advisories/GHSA-73f9-jhhh-hr5m
- WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33202.yml