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ZetaChain has temporarily suspended all cross-chain transactions on its mainnet after its development team detected a targeted exploit on the GatewayEVM smart contract. The pause comes as the project investigates the incident and works to ensure no further funds can be compromised.
According to the project’s update, the attack against the ZetaChain GatewayEVM contract affected only internal ZetaChain team wallets. The team said the breach did not compromise any user assets.
The incident was identified on April 27, 2026, when the team detected unauthorized activity linked to the GatewayEVM contract. The development group reported acting quickly to isolate and neutralize the vulnerability within minutes to prevent additional exposure.
GatewayEVM is described as a central component of ZetaChain’s architecture. It handles outbound calls and asset movements from ZetaChain to connected external chains, enabling cross-chain messaging and transfers. This functionality is positioned as core to ZetaChain’s aim of supporting universal connectivity across multiple blockchain and DLT networks.
As an immediate precaution, ZetaChain paused cross-chain transaction processing across the mainnet to allow for a thorough system review and to safeguard the broader network. The project said the attack vector has already been blocked, and that no more funds can be compromised while investigators conduct a full forensic analysis.
Users are directed to monitor real-time network status through ZetaChain’s official dashboard.
ZetaChain said it will release a detailed post-mortem report after the assessment is completed. The report is expected to cover the root cause, the exact mechanics of the exploit, and any recommended protocol enhancements.
The incident highlights ongoing security considerations for cross-chain protocols, where smart contracts must manage complex interactions with external environments. The project characterized the containment as evidence that internal monitoring and response protocols were effective, noting that user funds were not impacted.
While the suspension may create short-term inconvenience for projects relying on ZetaChain’s interoperability features, ZetaChain framed the action as responsible risk management rather than a systemic failure.
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