view_component: Reused Component Instances Retain Stale Render Context

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54497
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-17 21:17:08 UTC
Updated2026-07-20 15:16:43 UTC
Descriptionview_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.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.003120000 probability, percentile 0.233720000 (date 2026-07-20)

Problem Types: CWE-362 | CWE-488 | CWE-668 | CWE-362 CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | CWE-488 CWE-488: Exposure of Data Element to Wrong Session | CWE-668 CWE-668: Exposure of Resource to Wrong Sphere

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED6.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ViewComponent View Component affected >= 4.0.0, < 4.12.0 Not specified

References

ReferenceSourceLinkTags
github.com/ViewComponent/view_component/commit/6796b2e89d0bd7b9d7d763a86... [email protected] github.com
github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/ViewComponent/view_component/releases/tag/v4.12.0 [email protected] github.com
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