Critical vulnerability
Critical arbitrary file access in Ruby on Rails (GHSA-f3w6-w445-fwh9)
Arbitrary file access in Ruby on Rails · Servers and applications
GHSA-f3w6-w445-fwh9
Possible arbitrary file write and read in Active Storage image analysis
- Severity
- Critical 9.8
- Published
- 4 Nov 2026
- Fixed in
- 8.0.5.2, 8.1.4.1
| Software | Affected versions |
|---|---|
| Ruby on RailsServers and applications |
|
- GitHub Advisory Database https://github.com/advisories/GHSA-f3w6-w445-fwh9
- github.com https://github.com/rails/rails/security/advisories/GHSA-f3w6-w445-fwh9
From NVD, the CVE Program, OSV.dev with the GitHub Advisory Database, WPVulnerability, WordPress's security advisories and CISA's Known Exploited Vulnerabilities catalog, as they stood when this was written. Each vulnerability's own page has its latest rating and fix. This product uses the NVD API but is not endorsed or certified by the NVD.