Storage-layout collision risk across upgrades

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

Evidence summary #

UUPS pattern used (ConcreteFactory) and EIP-1967 transparent proxies (VaultProxy). Multiple 2026 upgrades occurred. No public OZ upgrades-plugin storage-layout validation artifact found for any 2026 upgrade. Curator should verify storage layout compatibility for March 2026 factory upgrade.

Sources #

GitHub
ConcreteFactory.sol — UUPS pattern (no public layout validation for 2026 upgrades)ConcreteFactory.sol uses OwnableUpgradeable + UUPSUpgradeable (OZ 5.2.0); no public storage layout validation report for March 2026 upgraderetrieved 2026-05-17

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 concrete factor RD-F-142 score gray collected_at 2026-05-17 14:36:59