Storage-layout collision risk across upgrades

M^0's assessment for RD-F-142 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Core contracts immutable — no storage-layout collision risk. Upgradeable proxies (WrappedM, HubPortal, Portal Lite, SwapFacility) use EIP-1967 proxy patterns. WrappedM uses migrate() function with controlled upgrade. OZ upgrades plugin validation not confirmed to be run. SwapFacility upgraded 2026-02-24 — no collision report found publicly.

Sources #

Etherscan
SwapFacility Proxy — EtherscanSwapFacility upgraded 2026-02-24: Transparent proxy pattern; no OZ upgrades plugin report foundretrieved 2026-05-16
Etherscan
WrappedM Proxy — EtherscanWrappedM Etherscan: migrate() upgrade function; EIP-1967 proxy patternretrieved 2026-05-16

Methodology #

Determine whether the OZ upgrades-plugin or manual review flags a storage-layout collision risk between implementation versions.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol m0 factor RD-F-142 score yellow collected_at 2026-05-16 09:46:19