DeFi Security · Protocol

Notional V1 security history

First generation of a fixed-rate lending protocol on Ethereum, deprecated in January 2022.

Database Incidents Chains Protocols Vulnerabilities

Stored incidents

2026-09-03 · reported loss $1.73M
Notional V1: integer overflow in a deprecated escrow contract
Official statement

This is the history we have stored, scoped to the components named in each record. It does not show that Notional V1 is safe or unsafe today, and a fix noted in one record applies only to what that record describes.