by Kastro CVE-2026-33195
rails activestorage — Rails Active Storage has possible Path Traversal in DiskService
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
activestorage>= 8.1.0.beta1, < 8.1.2.1–CNA
activestorage>= 8.0.0.beta1, < 8.0.4.1–CNA
activestorage< 7.2.3.1–CNA
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Red Hat 3scale API Management Platform 2see advisory–redhat-SADP
Scores by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
redhat-SADP (CNA)8.1CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
GitHub_M (CNA)8.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total