Storage-layout collision risk across upgrades

Compound V3 (Comet)'s assessment for RD-F-142 — scored green on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Compound V3 uses CometFactory to deploy entirely new implementation contracts (new addresses each time — not in-place UUPS modification). Storage layout compatibility critical across upgrades; OZ partnership includes upgrade compatibility review. No publicly documented storage layout collision found in 44 months. All observed upgrade implementation addresses are distinct.

Sources #

Etherscan
https://etherscan.io/address/0xc3d688B66703497DAA19211EEdff47f25384cdc3retrieved 2026-04-28
URL
https://www.openzeppelin.com/news/strengthening-defi-openzeppelin-and-compounds-security-partnership-in-2024retrieved 2026-04-28

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 compound-v3 factor RD-F-142 score green collected_at 2026-04-28 00:20:50