Preliminary research
Your WAF Blocked Us, That Was The Exploit — Remote Agent Takeover via Cloudflare, Sentry and Claude Zero-Day
AI-collected research leads through 6 October 2026, including bounded month-by-month reviews of selected social and community sources from January through September. Unranked, incomplete, not community-vetted, and subject to change.
Every source an agent reads is an injection channel: an unauthenticated Sentry event posted with a public DSN, a Datadog log written with a public client token, or a request crafted to trip Cloudflare's managed WAF so its User-Agent is stored verbatim in the firewall log. Shaped as scanner telemetry rather than a command, it gets the agent to npx an attacker package, or - sharing one session with a write-capable MCP - to repoint DNS. A reusable Claude Desktop egress JWT carries the data out.
Record
- Researcher
- Ron Bobrov, Nevo Poran and Barak Sternberg
- Format
- Whitepaper
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This page is the archive's own catalogue record. The research is the work of Ron Bobrov, Nevo Poran and Barak Sternberg, first published at the original source. Preserved copies are kept so the citation survives its host.