# Aave Risk Stewards propose cap and interest-rate changes across five V3 reserves

> No parameter is shown as operative yet. If implemented, the proposal would increase the Core wstETH borrow cap from 7,000 to 14,000;

- URL: https://riadefi.com/on-chain/2026-09-18-aave-v3-risk-steward-cap-irm/
- Type: Economic change
- Stage: Proposed
- Evidence: confirmed
- Materiality: watch
- Event date: 2026-09-18
- Version: 1, published 2026-09-19 (first published 2026-09-19)
- Follow-up: 2026-09-25
- Advisor-relevant: no
- Affects: Aave v3 (protocol)

## What happened

An official Aave governance record proposed Risk Steward changes to borrow and supply caps and interest-rate-model parameters across Aave V3 Core, Base, Mantle, X Layer, and Horizon.

## What changed

No parameter is shown as operative yet. If implemented, the proposal would increase the Core wstETH borrow cap from 7,000 to 14,000; lower Base WETH Slope1 from 2.50% to 2.30% and raise optimal utilization from 90% to 92%; raise the Mantle USDe supply cap from 20 million to 40 million; raise X Layer USDC Slope1 from 4.00% to 4.50%; and raise the Horizon USCC supply cap from 5.6 million to 7.5 million.

## What did not change

The record does not establish execution, does not change the current Ketju memo, and does not expand the memo's Ethereum GHO/sGHO shelf scope to the affected reserves or networks. It also does not establish a contract failure, loss event, or change to sGHO withdrawal mechanics.

## Confirmed

- The official record specifies the proposed current and recommended values for all five reserve changes.
- The Base WETH proposal would reduce the modeled withdrawal buffer at optimal utilization by 1,696 WETH while increasing borrow headroom by the same amount.
- The Mantle USDe and Horizon USCC proposals concern supply caps; the Core wstETH proposal concerns a borrow cap.
- The record says the changes will move forward through the Risk Steward process, but provides no executed transaction in the cached evidence.

## Still open

- Whether and when each proposed parameter change will be executed on-chain.
- The final transaction identifiers and effective block numbers for any implemented changes.
- Whether implementation will differ from the values stated in the proposal.

## What it means for an advisor

- Monitor the Risk Steward execution record and verify final on-chain values before treating any parameter as changed.
- Do not treat the proposal as approval of the affected reserves or networks; the current Aave v3 memo scope remains limited to Ethereum GHO deposited in sGHO.
- If implemented, record the reduced Base WETH withdrawal buffer at optimal utilization and the expanded cap capacity in the next Aave diligence review.

## Sources

1. [Risk Stewards: Cap and IRM Changes on Aave V3 / 2026.09.18](https://governance.aave.com/t/risk-stewards-cap-and-irm-changes-on-aave-v3-2026-09-18/25668) · Aave v3 · 2026-09-18


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Published by Ketju Research on RIADeFi (https://riadefi.com). Educational research for financial professionals; not investment, legal, tax, or compliance advice.