Stale-approval exposure on deprecated router

Save (formerly Solend)'s assessment for RD-F-168 — scored not_applicable on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Solana SPL token approval model differs from EVM. SPL token delegations are per-token-account, not global ERC-20 approvals. The deprecated router stale-approval risk (users' EVM token approvals persisting to a deprecated contract) does not map to Solana's account model. Additionally, no officially deprecated router contracts are identified for Save/Solend.

Sources #

Internal
SOLANA_GOVERNANCE.md — Solana account modelSOLANA_GOVERNANCE.md — Solana SPL token account model vs EVM ERC-20 approval modelretrieved 2026-05-17

Methodology #

Count the number of active user approvals (ERC-20 `allowance`) to deprecated router or protocol contracts.

See the full factor methodology and distribution across all protocols →

rubric_version v1.7.0 protocol save factor RD-F-168 score not_applicable collected_at 2026-05-17 15:20:15