JS: Handle Next.js files named 'page' or 'route' #20916
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Pull request overview
This PR fixes a bug in the Next.js model to properly detect server-side taint sources in files named route.ts or page.tsx/.jsx that appear outside the traditional api and pages folders, specifically within the app directory structure used by Next.js 13+ App Router.
Key Changes
- Refactored folder resolution predicates to support recursive traversal of
appandpagesdirectories - Extended
getAPagesModule()to recognize files namedpageanywhere within the app folder hierarchy - Enhanced
NextAppRouteHandlerto recognize files namedrouteanywhere within the app folder hierarchy
Reviewed changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| javascript/ql/lib/semmle/javascript/frameworks/Next.qll | Refactored folder predicates and extended route/page file detection to support Next.js App Router structure |
| javascript/ql/test/query-tests/Security/CWE-079/ReflectedXss/app/blah/route.ts | Added test case for route handler in non-api folder |
| javascript/ql/test/query-tests/Security/CWE-079/ReflectedXss/app/blah/page.jsx | Added test case for page component with server-side functions in non-pages folder |
| javascript/ql/test/query-tests/Security/CWE-079/ReflectedXss/ReflectedXssWithCustomSanitizer.expected | Updated expected test results to include new test cases |
| javascript/ql/test/query-tests/Security/CWE-079/ReflectedXss/ReflectedXss.expected | Updated expected test results to include new test cases |
| javascript/ql/src/change-notes/2025-11-26-nextjs-page-route-files.md | Added change note documenting the bug fix |
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Napalys
approved these changes
Jan 9, 2026
| deprecated predicate getAPagesFolder = pagesFolder/0; | ||
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| /** | ||
| * Gets a module corrosponding to a `Next.js` page. |
Contributor
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Nit existing typo, outside of this pr scope.
Suggested change
| * Gets a module corrosponding to a `Next.js` page. | |
| * Gets a module corresponding to a `Next.js` page. |
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The Next.js model was missing cases for files named
route.tsorpage.tsoutside thepagesorapifolders.