view_component Cross-site Scripting vulnerability

Vulnerability Description

view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. Versions prior to 3.9.0 and 2.83.0 have a cross-site scripting vulnerability that has the potential to impact anyone rendering a component directly from a controller with the view_component gem. Note that only components that define a `#call` method (i.e. instead of using a sidecar template) are affected. The return value of the `#call` method is not sanitized and can include user-defined content. In addition, the return value of the `#output_postamble` methodis not sanitized, which can also lead to cross-site scripting issues. Versions 3.9.0 and 2.83.0 have been released and fully mitigate both the `#call` and the `#output_postamble` vulnerabilities. As a workaround, sanitize the return value of `#call`.

References

• https://github.com/ViewComponent/view_component/security/advisories/GHSA-wf2x-8w6j-qw37
• https://github.com/ViewComponent/view_component/pull/1950
• https://github.com/ViewComponent/view_component/pull/1962
• https://github.com/ViewComponent/view_component/commit/0d26944a8d2730ea40e60eae23d70684483e5017
• https://github.com/ViewComponent/view_component/commit/c43d8bafa7117cbce479669a423ab266de150697