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CVE-2026-50159: Css Selector Incomplete Namespace Checkcve-2026-50159-css-selector-incomplete-namespace-check

The CSS selector scope check uses `startsWith(namespace)` without verifying trailing delimiters (such as spaces or child combinators). Selectors with sibling combinators (e.g., `#namespace~*`) can bypass scope prepending, leading to CSS injection or style pollution.

TSCVE-2026-50159CWE-20CWE-74
by Provallyupdated 2026-09-02Apache-2.0
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