🛡️ CVE-2026-33195
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-22 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Details

Severity HIGH
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-22
Public Exploit ✅ No
Source NVD
Published 2026-03-23
Updated 2026-06-15
Modified 2026-05-13

Affected Packages

Software From version Fixed in
activestorage — 7.2.3.1
rails 8.1.0 8.1.2.1

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