# THORChain Vault Payout Flaw

> THORChain warns reorg flaw could trigger repeat vault payouts.
- Title: THORChain Vault Payout Flaw · TokenPost | Shortify
- Summary: THORChain warns reorg flaw could trigger repeat vault payouts. THORChain's reorg flaw risks repeat vault payouts after a failed ETH swap left a vault 10 ETH…
- Keywords: thorchain, eth, vault, reorg, payout, nonce, blockchain, ethereum, crypto, finance, Flaw, TokenPost
- Source: TokenPost — https://tokenpost.com/news/technology/47020
- Published: 2026-11-02T23:09:57+00:00
- Read time: 1 min
- Topics: thorchain, eth, vault, reorg, payout, nonce, blockchain, ethereum, crypto, finance
## THORChain reorg warning
THORChain warned a reorg flaw could let someone use a replacement transaction with the same nonce to collect funds from vaults on another chain.

> A malicious actor could perform a new transaction with the same nonce and would be paid funds by the thorchain vaults
## Oct 31 ETH swap failure
At 7:34 a.m. et (11:34 utc) on oct 31, ethereum’s history shifted back one block, removing a deposit thorchain had already recorded.
## Vault solvency restored
The user returned the 10 eth, restoring the vault’s solvency while developers worked on fixes.
## Key takeaway

THORChain's reorg flaw risks repeat vault payouts after a failed ETH swap left a vault 10 ETH short.