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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00312.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ViewComponent view_component affected
Version Status Constraints
>= 4.0.0, < 4.12.0 affected —

No data.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9h85-g7w3-rh49 ViewComponent: Reused Component Instances Retain Stale Render Context
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/ViewComponent/view_component/commit/6796b2e89d0bd7b9d7d763a86275e5334731dd61 cve-icon
https://github.com/ViewComponent/view_component/releases/tag/v4.12.0 cve-icon
https://github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7w3-rh49 cve-icon
History

Fri, 17 Jul 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Viewcomponent
Viewcomponent view Component
Vendors & Products Viewcomponent
Viewcomponent view Component

Fri, 17 Jul 2026 21:00:00 +0000

Type Values Removed Values Added
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.
Title view_component: Reused Component Instances Retain Stale Render Context
Weaknesses CWE-362
CWE-488
CWE-668
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-17T20:45:28.338Z

Reserved: 2026-06-15T18:01:15.511Z

Link: CVE-2026-54497

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-17T22:45:04Z

Weaknesses