| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/cosmos/ethermint | < 0.4.1 | 0.4.1 |
| ethermint | ≤ 0.4.0 |
Cosmos Network Ethermint <= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the same chainIDEpoch and signature schemes with ethereum for compatibility, a verified signature in ethereum is still valid in ethermint with the same msg content and chainIDEpoch, which enables "cross-chain transaction replay" attack.
github.com/cosmos/ethermint/rpc/namespaces/eth
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