Urgent: BSC Mainnet & Chapel – Upgrade Geth to v1.6.6 (Security Fixes)

Scheduled Maintenance Report for Quicknode

Completed

The scheduled maintenance has been completed.

Posted Feb 04, 2026 - 09:19 UTC

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.

Posted Feb 03, 2026 - 11:00 UTC

Scheduled

We will perform an urgent security upgrade of the Geth client to v1.6.6 across BSC Mainnet and Chapel on February 3, 2026, at 11:00 UTC.
This release contains important security fixes and is required to maintain network safety and client stability.

No downtime is expected, but customers may experience brief connection interruptions and a small number of HTTP 503 responses as services restart and resynchronize with the network.

Release links:
• 📦 Geth: https://github.com/bnb-chain/bsc/releases/tag/v1.6.6

Posted Feb 03, 2026 - 09:43 UTC

This scheduled maintenance affected: BNB Smart Chain (BSC) (Mainnet — JSON-RPC API, Mainnet — WebSocket API, Mainnet — Webhooks, Mainnet — Streams, Testnet — JSON-RPC API, Testnet — WebSocket API, Testnet — Webhooks, Testnet — Streams).