How Cloudflare addressed a cross-tenant data exposure vulnerability in Containers
- Cloudflare: 307 events in the last 90 days
- Previous: earlier the same day · PER (Perth) on 2026-09-23
What happened
On September 4, 2026, Oren Yomtov, a security researcher from Accomplish , responsibly reported a vulnerability affecting Cloudflare Containers and Cloudflare Sandboxes (which is built on Containers), through Cloudflare’s bug bounty program . Cloudflare has fully remediated the vulnerability, and we have no evidence that customer data has been compromised. This post was prepared in collaboration with Oren Yomtov and…
Summary assembled by rule from the sources below