🚨 @klever_org Security Incident Update
We have published a detailed report regarding the recent royalty inflation vulnerability in the NFT Marketplace kApp.
🔒 Status: Fully Mitigated
🛠️ Fix: Fork 19.rc-2 deployed successfully
For full transparency on the root cause, fund tracking, and our immediate next steps, please read the complete report on the Klever Forum:
https://t.co/bzzmiSYObn
#Klever #KLV #SecurityUpdate #KleverBlockchain
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Klever responded immediately upon receiving reports of suspicious activity from the KleverPulse monitoring team. Through rapid coordination between developers, validators, and community contributors, a mitigation was developed and deployed to mainnet while the root cause investigation continues.
See the preliminary incident report below.
Preliminary Security Incident Report
Klever Blockchain — NFT Marketplace Exploit
Date: June 5, 2026
Status: Under Active Investigation
Summary
Klever was alerted by the KleverPulse monitoring team (https://t.co/YjBbNx7SaQ) to suspicious on-chain activity consistent with wash trading. Upon internal investigation, a critical exploitation flaw was identified in the NFT Marketplace kApp.
Attack Vector
The attacker self-issued and self-inflated an NFT collection, exploiting a flaw in the NFT Marketplace kApp to artificially generate KLV. The fabricated KLV was subsequently liquidated via the DEX into wrapped assets (USDC, USDT, WBTC, WETH) and exited through the ETH–KLV bridge.
Immediate Response
A partial fix was developed and deployed to mainnet while root cause analysis remains ongoing. The fix was made possible in part through community collaboration and rapid coordination.
Current Status
• Exploit vector: partially mitigated
• Root cause analysis: in progress
• Mainnet: updated with partial fix
• Bridge and DEX activity: under monitoring
Next Steps
A full post-mortem will be published once the root cause is confirmed. Further patches may follow. All stakeholders will be kept informed as the investigation progresses.
This is a preliminary report. Information is subject to revision as new findings emerge.
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