ERC-4626 virtual-share offset (OZ ≥4.9)
Symbiotic's assessment for RD-F-074 — scored not_applicable on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
DefaultCollateral contracts are custom ERC-20 wrappers, not ERC-4626 vaults. The share-inflation attack vector (first depositor inflates share price for compounding yield vaults) does not apply: Symbiotic Vaults track collateral principal (not compounding interest), and vault architecture is a security delegation primitive with no yield-compounding accounting layer. Taxonomy PD-024 lending-only; additionally protocol-type mismatch with ERC-4626 standard.
Sources #
- URLUnderstanding Symbiotic Vaults — Symbiotic BlogSymbiotic blog: Understanding Symbiotic Vaults — vault architecture described as delegation primitive, not yield vaultretrieved 2026-05-16
- Symbiotic Collateral GitHub Repositorysymbioticfi/collateral — DefaultCollateral.sol is a custom ERC-20 wrapper with limit enforcement, not ERC-4626retrieved 2026-05-16
Methodology #
Determine whether ERC-4626 vaults use OpenZeppelin ≥4.9 virtual-share offset pattern to prevent first-depositor share-inflation.
See the full factor methodology and distribution across all protocols →