CVE-2026-54497
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 3.1
- 6.8
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-362, CWE-488, CWE-668
- Published
- Modified
- Record from
- the NVD, synced
Affected
- viewcomponent:view_component
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-9h85-g7w3-rh49 | RubyGems | view_component | >=4.0.0 <4.12.0 | 4.12.0 |
References
- https://github.com/ViewComponent/view_component/commit/6796b2e89d0bd7b9d7d763a86275e5334731dd61
- https://github.com/ViewComponent/view_component/releases/tag/v4.12.0
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7w3-rh49
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7w3-rh49