Stale-approval exposure on deprecated router

Sky Lending (formerly MakerDAO)'s assessment for RD-F-168 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

[migrated from Cat 12 via PD-032 2026-04-23] SAI Emergency Shutdown Nov 2019 (~6 years ago); stale SAI approvals negligible. Active DAI->USDS migration converter is ongoing (not deprecated). If this converter is ever deprecated, stale approvals would be a concern. Full allowance scan not performed.

Sources #

Governance
https://vote.makerdao.com/executive/template-executive-vote-out-of-schedule-executive-vote-usds-susds-and-sky-tokens-initialization-sbe-upgrade-sky-dssvestmintable-setup-usds-sky-farming-setup-usds-01-farming-setup-miscellaneous-actions-september-13-2024retrieved 2026-04-28

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 sky-lending factor RD-F-168 score yellow collected_at 2026-04-28 00:43:18