Vulnerability Description
view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 4.0.0 until 4.12.0, ViewComponent::Base instances retain render-scoped objects across calls to render_in; if the same component, collection, or spacer component instance is reused across requests, users, tenants, or threads, later renders can use stale helpers, controller, request, view_flow, format/variant details, and slot child context from an earlier render. This can cause authorization-aware components to render privileged UI for a lower-privileged user, generate links using a stale Host header, leak slot/helper state, and mix request context under concurrent rendering. This issue is fixed in version 4.12.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Viewcomponent | View Component | >= 4.0.0, < 4.12.0 |
Related Weaknesses (CWE)
References
- https://github.com/ViewComponent/view_component/commit/6796b2e89d0bd7b9d7d763a86Patch
- https://github.com/ViewComponent/view_component/releases/tag/v4.12.0ProductRelease Notes
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7ExploitMitigationVendor Advisory
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7ExploitMitigationVendor Advisory
FAQ
What is CVE-2026-54497?
CVE-2026-54497 is a vulnerability with a CVSS score of 6.8 (MEDIUM). view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 4.0.0 until 4.12.0, ViewComponent::Base instances retain render-scoped objects ac...
How severe is CVE-2026-54497?
CVE-2026-54497 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54497?
Check the references section above for vendor advisories and patch information. Affected products include: Viewcomponent View Component.