Potential fix for code scanning alert no. 1824: DOM text reinterpreted as HTML - #5077
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marked this pull request as ready for review
September 23, 2026 03:51
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Sep 23, 2026 3:51a.m. | Review ↗ |
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Potential fix for https://github.com/codeharborhub/codeharborhub.github.io/security/code-scanning/1824
To fix this without changing intended functionality, avoid embedding untrusted CSS directly into an HTML string passed to
document.write. Instead:<style>element via DOM APIs.styleEl.textContent(notinnerHTMLand not template-interpolated HTML).This preserves CSS preview behavior while preventing
</style>...breakout attacks, since textContent is treated as plain text within the style node.In
src/components/CodePlayground.jsx, update only theexecuteCSSfunction region (lines around 106–129). Replace the dynamichtmlContenttemplate usage andiframeDoc.write(htmlContent)with safe document construction and stylesheet injection viatextContent. No new imports or dependencies are needed.Suggested fixes powered by Copilot Autofix. Review carefully before merging.