PT-2026-27262 · Rails+1 · Active Storage

Published 2026-03-23 · Updated 2026-03-24 · CVE-2026-33195

Mitre

CVSS v4.0

8.0

High

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U

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.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-33195

GHSA-9XRJ-H377-FR87

Affected Products

Active Storage

References · 10

• https://osv.dev/vulnerability/GHSA-9xrj-h377-fr87 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33195 · Security Note
• https://github.com/rails/rails · Note
• https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87 · Note
• https://github.com/rails/rails/releases/tag/v8.0.4.1 · Note
• https://github.com/rails/rails/commit/9b06fbc0f504b8afe333f33d19548f3b85fbe655 · Note
• https://github.com/rails/rails/releases/tag/v7.2.3.1 · Note
• https://github.com/rails/rails/releases/tag/v8.1.2.1 · Note
• https://github.com/rails/rails/commit/a290c8a1ec189d793aa6d7f2570b6a763f675348 · Note
• https://github.com/rails/rails/commit/4933c1e3b8c1bb04925d60347be9f69270392f2c · Note