Stale-approval exposure on deprecated router

Wormhole's assessment for RD-F-168 — scored gray on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.

Evidence summary #

Stale user approvals on deprecated router | Multiple chains deprecated (Terra, Oasis, Aurora, Acala, Karura, Xpla). User approvals to deprecated Portal Token Bridge contracts on these chains are no longer usable but may persist on-chain. Allowance scan not performed (requires chain-level enumeration across 6+ deprecated chains). | Profile (deprecation list); Wormhole network updates blog | gray

Sources #

Curator note
Extracted from 02-governance-admin.md — RD-F-168; no URL citedretrieved 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 wormhole factor RD-F-168 score gray collected_at 2026-04-28 01:38:43