CVE-2026-54498 view_component: around_render HTML-Safety Bypass
Attackers can inject malicious scripts via around_render in ViewComponent, leading to XSS in Ruby on Rails applications.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-54498?
CVE-2026-54498 is a high-severity cross-site scripting vulnerability in ViewComponent view_component, published on 17 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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#around_render can return HTML-unsafe strings that bypass the escaping behavior applied to normal #call return values. This creates an XSS risk when downstream applications use around_render to wrap, replace, instrument, or conditionally return content that includes user-controlled data, and ViewComponent::Collection#render_in can amplify the issue by joining per-item results and marking the entire output html_safe, converting raw unsafe output into an ActiveSupport::SafeBuffer. This issue is fixed in version 4.12.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-54498?
2 open source packages ship an affected version, including view_component. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
view_component RubyGems | From 4.0.0 | 4.12.0 |
view_component RubyGems | From 4.0.0 | 4.12.0 |
Products include Viewcomponent View Component.
How do I fix CVE-2026-54498?
Upgrade view_component to 4.12.0 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-54498 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54498 exists.
Other vulnerabilities in ViewComponent view_component
Sources
Also known as GHSA-97jw-64cj-jc58.