CVE-2026-54497

MEDIUM

MEDIUM Priority: 0.02 BB Relevance: 54/100

Published: 2026-07-17 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network

AC: High

PR: Low

UI: None

S: Unchanged

C: High

I: High

A: None

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.