CVE-2026-33202CWE-74

Rails Active Storage has possible glob injection in its DiskService

Medium · published March 23, 2026

CVSS v4.0
6.6
EPSS
1%
Percentile
51.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.6 · MEDIUM
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
EPSS
0.00672 · 51.5th percentile
Weakness
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Published
2026-03-23T23:34Z
EPSS history
Timeline
  • 23 MAR 23:34Z
    Rails Active Storage has possible glob injection in its DiskService
    cvelistv5