GHSA-9xrj-h377-fr87
Rails Active Storage has possible Path Traversal in DiskService
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2026-33195
- CVSS_V4
- CVSS: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
Description
### Impact 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. ### Releases The fixed releases are available at the normal locations. ### Credit This issue was responsibly reported by Hackerone researcher [ksw9722](https://hackerone.com/ksw9722).
Paquets affectés
| Paquet | Versions |
|---|---|
| RubyGems · activestorage | introduced 8.1.0.beta1, fixed 8.1.2.1 |
| RubyGems · activestorage | introduced 8.0.0.beta1, fixed 8.0.4.1 |
| RubyGems · activestorage | introduced 0, fixed 7.2.3.1 |
Références
- https://github.com/rails/rails/security/advisories/GHSA-9xrj-h377-fr87 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-33195 ADVISORY
- https://github.com/rails/rails/commit/4933c1e3b8c1bb04925d60347be9f69270392f2c WEB
- https://github.com/rails/rails/commit/9b06fbc0f504b8afe333f33d19548f3b85fbe655 WEB
- https://github.com/rails/rails/commit/a290c8a1ec189d793aa6d7f2570b6a763f675348 WEB
- https://github.com/rails/rails PACKAGE
- https://github.com/rails/rails/releases/tag/v7.2.3.1 WEB
- https://github.com/rails/rails/releases/tag/v8.0.4.1 WEB
- https://github.com/rails/rails/releases/tag/v8.1.2.1 WEB
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33195.yml WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |