Breakage analysis per dependency
USDD (Decentralized USD)'s assessment for RD-F-052 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
If both Chainlink and WINkLink fail: no new price update reaches Spot; OSM freezes at last-known price; under-collateralized vaults not liquidated; bad-debt risk. If governance delay remains disabled and oracle is compromised: malicious price propagates immediately to collateral ratio with no human backstop. If TrxOracleValue precision-loss causes systematic TRX underpricing: under-collateralization detection fails. If PSM reserves depleted: peg anchor fails (Cat 4 risk). JustLend/SunSwap failure: venue-only risk, does not impair USDD CDP or oracle.
Sources #
- DocsUSDD Oracle Developer DocsUSDD oracle architecture: three-layer Median/OSM/Spot pipeline describedretrieved 2026-05-17
- PUBLIC Code Assessment of USDD V2 Smart Contracts, January 24 2025ChainSecurity USDD V2 audit Jan 2025 — TrxOracleValue precision-loss in peek() function; governance delay disabled; Denial of Service in Median due to revert on invalid price (partially corrected)retrieved 2026-05-17
Methodology #
Produce a short per-dependency text describing which protocol functions halt or degrade and impact severity if each declared dependency fails.
See the full factor methodology and distribution across all protocols →