GHSA-wf2x-8w6j-qw37

Dashboard / Vulnerabilities / GHSA-wf2x-8w6j-qw37

GHSA-wf2x-8w6j-qw37

Summary: view_component Cross-site Scripting vulnerability

Details: ### Impact _What kind of vulnerability is it? Who is impacted?_ This is an XSS 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](https://viewcomponent.org/guide/templates.html#call) (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` method](https://viewcomponent.org/api.html#output_postamble--string) is not sanitized, which can also lead to XSS issues. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Versions 3.9.0 has been released and fully mitigates both the `#call` and the `#output_postamble` vulnerabilities. ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ Sanitize the return value of `#call`, eg: ```ruby class MyComponent < ApplicationComponent def call html_escape("<div>#{user_input}</div>") end end ``` ### References _Are there any links users can visit to find out more?_ https://github.com/ViewComponent/view_component/pull/1950 ### For more information If you have any questions or comments about this advisory: Open an issue in the [github/view_component](https://github.com/github/view_component) project.

References: https://github.com/ViewComponent/view_component/security/advisories/GHSA-wf2x-8w6j-qw37, https://nvd.nist.gov/vuln/detail/CVE-2024-21636, 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, https://github.com/ViewComponent/view_component, https://github.com/rubysec/ruby-advisory-db/blob/master/gems/view_component/CVE-2024-21636.yml