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XBOW Secures $250,000 for Chrome Exploit Chain Using AI

XBOW Secures $250,000 for Chrome Exploit Chain Using AI

First seen 14 Oct 2026, 07:06 UTC • •
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ThreatCluster AI
ThreatCluster •October 14, 2026 at 08:29 UTC
  • •XBOW's exploit chain combined three vulnerabilities in Chrome.
  • •The exploit was developed in just six days using AI assistance.
  • •Google confirmed the vulnerabilities and issued fixes without real-world exploitation.

XBOW researchers developed a full-chain exploit for Chrome in just six days, leveraging three vulnerabilities: a bug in the Maglev compiler, an animated WebP decoder flaw, and a memory-safety issue in Crashpad. This exploit allowed for code execution outside the renderer sandbox, earning them the first $250,000 reward under Google's new Chrome Vulnerability Reward Program. The exploit was built from August 2 to August 7, 2026, with AI agents assisting in the process. Google has confirmed the vulnerabilities and issued fixes, noting that none were exploited against real users. The entire campaign incurred $40,000 in API costs, showcasing a significant reduction in time needed to develop such exploits compared to pre-AI methods. The implications suggest that finding and exploiting such vulnerabilities may become more common and faster.

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Timeline

2026-08-02
Exploit development begins
XBOW researchers started building the exploit chain using AI agents.
Xbow
2026-08-07
Exploit development completed
The full-chain exploit was completed and submitted for the Chrome Vulnerability Reward Program.
Xbow
2026-10-13
XBOW publishes technical details
XBOW released a blog post detailing the exploit mechanics and vulnerabilities involved.
Xbow
2026-10-14
Startupfortune reports on exploit
Startupfortune covered the exploit and its implications for the future of cybersecurity.
Startupfortune

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Common questions

What vulnerabilities were exploited?
The exploit chain involved a bug in the Maglev compiler, a flaw in the animated WebP decoder, and a memory-safety issue in Crashpad.
Has Google fixed the vulnerabilities?
Yes, Google confirmed the vulnerabilities and has shipped fixes for them.
Were these vulnerabilities exploited in the wild?
No, none of the three flaws were ever exploited against real Chrome users.