Vulnerability · Published Jul 17, 2026 · Assigned by GitHub_M
CVE-2026-54498view_component: around_render HTML-Safety Bypass
High 8.7
In plain English
A high-severity cross-site scripting in view_component from ViewComponent. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| RubyGems | view_component | 4.12.0 | GHSA-97jw-64cj-jc58 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ViewComponent | view_component | >= 4.0.0, < 4.12.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
References
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-97jw-64cj-jc58 x_refsource_CONFIRM
- https://github.com/ViewComponent/view_component/commit/48e5fd2d602344c7d33019fbc5c8b087e315bb78 x_refsource_MISC
- https://github.com/ViewComponent/view_component/commit/6796b2e89d0bd7b9d7d763a86275e5334731dd61 x_refsource_MISC
- https://github.com/ViewComponent/view_component/releases/tag/v4.12.0 x_refsource_MISC