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CISA Flags Actively Exploited Ray Flaw That Can Trigger Browser-Based RCE
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Fusion42 · 18 August 2026 · Fusion42 review
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a critical remote code execution (RCE) vulnerability in the Ray distributed computing framework to its Known Exploited Vulnerabilities catalog, citing active exploitation via browser-based DNS rebinding attacks targeting endpoints lacking authentication.
This Wire brief sits within Fusion42's coverage of AI Infrastructure.
◆ ◆ The Wire takeaway
This vulnerability makes every Ray developer a target if their browser visits a malicious site. You must urgently check for and isolate Ray instances to prevent your platform being hijacked through this code execution flaw.
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1 source · 18 Aug 2026
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