fix: Escapes in raw text #29
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Prevents XSS by ensuring raw text within `<noscript>` elements is properly escaped during serialization if scripting is enabled. Adds a test to verify controlled payloads cannot break out of `<noscript>` and inject scripts. Fixes angular/angular#68903
Correct raw-text closing-tag escaping so astral Unicode characters cannot misalign the escaped `<` character. This prevents serialized raw-text content from breaking out into executable markup such as `</iframe><script>`.
SkyZeroZx
commented
May 25, 2026
| // (`[...rawText]`). Astral characters (e.g. emoji) before the match | ||
| // would otherwise shift the replacement and leave a real `</tag>` | ||
| // break-out in the output. | ||
| return rawText.replace( |
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I was doing some regression testing and also found this issue with iframe and TextContent using astral characters like '😀', so we'll fix it in the same PR; it's added as another commit.
SkyZeroZx
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</noscript in raw text when scripting enabled
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fix: Escapes </noscript in raw text when scripting enabled
Ensuring raw text within
<noscript>elements is properly escaped during serialization if scripting is enabled. Adds a test to verify controlled payloads cannot break out of<noscript>and inject scripts.Fixes angular/angular#68903
fix: fix raw-text element serialization
Correct raw-text closing-tag escaping so astral Unicode characters cannot
misalign the escaped
<character. This prevents serialized raw-text contentfrom breaking out into executable markup such as
</iframe><script>.