XSS in steam react chat client
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The Steam chat client both sends and receives bbcode format chat messages. These map to HTML elements, and notably the [url] bbcode tag is supported for arbitrary URLs. React has strong XSS mitigations but does not mitigate `javascript:` URI based XSS.
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阅读 HackerOne 原文 ↗作者 @zemnmez · 版权归作者与 Valve 所有