ERC-777/1155/721 hook without reentrancy guard

crvUSD (Curve Stablecoin)'s assessment for RD-F-015 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

crvUSD accepts collateral tokens (WETH, wstETH, WBTC, sfrxETH, tBTC) — none are ERC-777 tokens with callbacks. crvUSD ERC-20 token (Stablecoin.vy) has no ERC-777/ERC-1155/ERC-721 hook integrations. No callback-based reentrancy risk from token standards.

Sources #

GitHub
Stablecoin.vy — GitHubStablecoin.vy — standard ERC-20 without callback hooksretrieved 2026-05-16
Internal
crvUSD Protocol Profile §7 — Key External DependenciesProfile §7 — collateral token list (WETH, wstETH, WBTC, sfrxETH, tBTC — none ERC-777)retrieved 2026-05-16

Methodology #

Determine whether the protocol integrates token standards with callbacks (ERC-777 tokensReceived, ERC-1155 onReceived, ERC-721 onReceived) without reentrancy guards on the affected functions.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol crvusd factor RD-F-015 score green collected_at 2026-05-16 19:09:40