Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 16.5%
CVSS Severity
CVSS v3 Score 6.8
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
Products affected by CVE-2026-54497
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cpe:2.3:a:viewcomponent:view_component:4.0.0
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cpe:2.3:a:viewcomponent:view_component:4.0.1
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cpe:2.3:a:viewcomponent:view_component:4.0.2
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cpe:2.3:a:viewcomponent:view_component:4.1.0
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cpe:2.3:a:viewcomponent:view_component:4.1.1
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cpe:2.3:a:viewcomponent:view_component:4.10.0
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cpe:2.3:a:viewcomponent:view_component:4.11.0
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cpe:2.3:a:viewcomponent:view_component:4.2.0
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cpe:2.3:a:viewcomponent:view_component:4.3.0
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cpe:2.3:a:viewcomponent:view_component:4.4.0
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cpe:2.3:a:viewcomponent:view_component:4.5.0
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cpe:2.3:a:viewcomponent:view_component:4.6.0
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cpe:2.3:a:viewcomponent:view_component:4.7.0
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cpe:2.3:a:viewcomponent:view_component:4.8.0
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cpe:2.3:a:viewcomponent:view_component:4.9.0