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Bonzo Lend Suffers $9M Loss from Oracle Exploit on Hedera

Bonzo Lend Suffers $9M Loss from Oracle Exploit on Hedera

First seen 11 Jul 2026, 16:27 UTC • •

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ThreatCluster AI
ThreatCluster •July 12, 2026 at 13:27 UTC
  • •Bonzo Lend lost approximately $9 million due to an oracle exploit on July 11, 2026.
  • •The attacker manipulated the SAUCE token price through a vulnerability in the Supra oracle's verification process.
  • •Bonzo Lend has paused operations to assess the impact and develop recovery measures.

On July 11, 2026, Bonzo Lend, a decentralized lending protocol on the Hedera network, experienced a significant security breach resulting in losses of approximately $9 million. An attacker exploited a vulnerability in the third-party oracle provider, Supra, which allowed them to manipulate the price of the SAUCE token. By submitting an inflated price update, the attacker was able to borrow 6.63 million USDC and 34.5 million wrapped HBAR, far exceeding the actual value of their collateral. The exploit stemmed from a flaw in the oracle's signature verification process, which accepted a manipulated price without a valid signature. Bonzo Lend has since paused operations to assess the situation and develop recovery measures. The incident highlights the risks associated with reliance on external oracle systems in decentralized finance. A second account also borrowed funds during the exploit but later identified itself as a white-hat hacker intending to return the assets. Bonzo Finance Labs and the Bonzo Finance Foundation are coordinating recovery efforts and have confirmed that the incident did not originate from vulnerabilities within Bonzo Lend's contracts or the Hedera network.

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Timeline

2026-07-11
Oracle exploit occurs at Bonzo Lend
An attacker manipulated the SAUCE token price via the Supra oracle, allowing them to borrow excessive funds.
Kucoin
2026-07-11
Bonzo Lend pauses operations
Following the exploit, Bonzo Lend suspended its services to prevent further losses and assess the situation.
Cryptorank
2026-07-11
Incident report published
Bonzo Finance Labs released a preliminary report detailing the exploit and its causes, emphasizing that the vulnerability was not in their contracts.
Kucoin
2026-07-11
Second account identified as white-hat
A second account that borrowed funds during the exploit contacted Bonzo, identifying as a white-hat hacker willing to return the funds.
Cryptonews
2026-07-12
Bonzo Finance confirms loss amount
Bonzo Finance confirmed the total loss from the exploit to be approximately $9.05 million, detailing the amounts borrowed.
Tokenpost

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