{"id":"CVE-2024-21636","state":"PUBLISHED","title":"view_component Cross-site Scripting 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`.","publishedAt":"2024-01-04T20:09:08.564Z","updatedAt":"2025-06-17T20:29:11.989Z","severity":{"score":6.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ViewComponent view_component"],"affected":[{"vendor":"ViewComponent","product":"view_component","versions":[{"version":">= 3.0.0, < 3.9.0","status":"affected"},{"version":"< 2.83.0","status":"affected"}]}],"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"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/21xxx/CVE-2024-21636.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21636","state":"PUBLISHED","datePublished":"2024-01-04T20:09:08.564Z","dateUpdated":"2025-06-17T20:29:11.989Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2023-12-29T03:00:44.957Z"},"containers":{"cna":{"title":"view_component Cross-site Scripting vulnerability","descriptions":[{"lang":"en","value":"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. 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