CVE-2026-54497 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-54497MEDIUM

ViewComponent view_component — view_component: Reused Component Instances Retain Stale Render Context

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   L   N  U  H  H  N    6.8   .0025   16.5     —

AFFECTED
  Product         Versions              Fixed
  view_component  >= 4.0.0, < 4.12.0 –  —

TIMELINE
  Jun 15  Reserved by GitHub_M
  Jul 17  EXPLOIT PUBLISHED — CVE-2026-54497 (ViewComponent view_component). Public exploit reference added.
  Jul 17  Published (CNA: GitHub_M)
  Jul 29  EXPLOIT PUBLISHED — CVE-2026-54497 (ViewComponent view_component). Public exploit reference added.

CWE-362, CWE-488, CWE-668 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
June 15, 2026	Reserved	Reserved by GitHub_M
July 17, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54497 (ViewComponent view_component). Public exploit reference added.
July 17, 2026	Published	Published (CNA: GitHub_M)
July 29, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54497 (ViewComponent view_component). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
ViewComponent	view_component	—	>= 4.0.0, < 4.12.0	—

Weaknesses

CWE-362 · CWE-488 · CWE-668

References (3)

https://github.com/ViewComponent/view_component/commit/6796b2e89d0bd7b9d7d763a86275e5334731dd61 [Patch]
https://github.com/ViewComponent/view_component/releases/tag/v4.12.0 [Product, Release Notes]
https://github.com/ViewComponent/view_component/security/advisories/GHSA-9h85-g7w3-rh49 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-54497 at cve.org

Vendors: viewcomponent

Weaknesses: CWE-362 · CWE-488 · CWE-668

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54497 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.