Oraichain — EVM Cross-Chain Unauthorized Minting Exploit (August 2026)
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anchored·43NVX3…rzUDSummary
On August 9, 2026, Oraichain — an AI-focused Layer 1 blockchain — suffered a supply-integrity exploit in which a vulnerability in its EVM cross-chain transfer path enabled the unauthorized minting of ORAI tokens. The team halted the entire network at 04:00 UTC, restricted all bridges and cross-chain routes, and coordinated with centralized exchanges including MEXC to freeze fund movements. As of mid-August 2026, the exploit path had been addressed, the network had been restored, and the team was preparing to burn the unauthorized minted balances to reconcile canonical ORAI supply.
Connected Entities
4 entities · 26 linked investigations- Oraichain — EVM Cross-Chain Unauthorized Minting Exploit (August 2026)→mentioned with→Harmony Bridge(80%)
- Oraichain — EVM Cross-Chain Unauthorized Minting Exploit (August 2026)→mentioned with→Coinsbuy(60%)
- Harmony Protocol (2026 ONE Token Exploit and L1 Shutdown)→mentioned with→Harmony Bridge(80%)
- Harmony Bridge→mentioned with→Harmony Protocol (2026 ONE Token Exploit and L1 Shutdown)(80%)
- Oraichain — EVM Cross-Chain Unauthorized Minting Exploit (August 2026)→mentioned with→Harmony Protocol (2026 ONE Token Exploit and L1 Shutdown)(80%)
Connected Through
3 shared actors · 26 investigationsDistinct actors this investigation shares with others — holders, traders, and named parties. Shared infrastructure (exchanges, pools) is excluded.
- □Harmony Bridgeorganizationalso inCrypto Whale Repeat Phishing — $25.6M Drain August 2026·0North Korea Lazarus Group — H1 2026 Systematic Crypto Theft Campaign·0Crypto Whale — $25.6M Repeat Phishing Drain (August 2026)·0Crypto Whale Repeat Phishing Drain — August 2026·2DxSale·4Harmony Horizon Bridge·4Harmony ONE (Protocol Entity)·8Hundred Finance·8Harmony Bridge·10Binance Bridge·10Harmony Protocol (2026 ONE Token Exploit and L1 Shutdown)·12Bybit v. DPRK Lazarus Group -- $1.5B Hack Civil Lawsuit (August 2026)·14Harmony ONE (August 2026 Layer-1 mint exploit)·168ightDAO·18Roman Storm·22StablR·38Railgun·40Granary Finance (GRAIN)·42Celestia·54Wormhole·62Aave·74
- ♦Coinsbuytoken
- ♦Harmony Protocol (2026 ONE Token Exploit and L1 Shutdown)token
Community submissions
“KuCoin flash news confirming Oraichain's August 9, 2026 network halt from EVM cross-chain unauthorized minting and partner exchange coordination”
— avoid-scout
“CryptoTimes weekly exploit roundup (August 16) confirms Oraichain unauthorized minting among August 9-15 incidents; total weekly crypto losses exceeded $37 million across multiple protocols”
— avoid-scout
Timeline(6 events)
9 August 2026
Vulnerability in Oraichain EVM cross-chain transfer path exploited, enabling unauthorized minting of ORAI tokens. Network halted at 04:00 UTC. Bridges, cross-chain routes, and public interfaces restricted.
Oraichain on X; CryptoRank9 August 2026
MEXC temporarily suspended ORAI deposits and withdrawals at the request of the Oraichain project team.
MEXC official announcement10 August 2026
Oraichain issued follow-up statement confirming exploit path had been identified and addressed, and announcing plans to burn unauthorized minted balances to restore canonical supply.
Oraichain on X; CryptoRank11 August 2026
Oraichain network reported to have come back online following patching and reconciliation efforts.
Oraichain on X12 August 2026
Harmony Protocol suffered a separate but structurally similar unauthorized minting exploit, with approximately 4 billion ONE tokens minted via a quorum verification flaw.
Decrypt; The Block16 August 2026
Crypto Times weekly security roundup reported the Oraichain incident alongside other exploits totaling more than $37 million in confirmed losses for the week of August 9–15, 2026. No formal Oraichain post-mortem had been published.
Crypto TimesDecision Log
- hash: xJdMDRhT3XDeUk3mnFv9RVXE8isVLZiGfpyPRYR2QTa
- hash: 5o7x8J1JFyP9Y1S8KMxcdy24PnposuckHAJJWnL4e1d2
- hash: 4ukLrcA5bsw9whd4Ecv9h4WATmme29333d8X3vqwY8es
- hash: A1AVNANtnYWzMLY9jmjmLruDiwgjwtzDxYaeJG9QTB8R
This investigation is cryptographically anchored to the Solana blockchain (4 events). 7 of 9 cited source URLs have an Internet Archive snapshot.
model: claude-sonnet-4-6
generated: 8/16/2026, 5:04:32 PM
last updated: 8/25/2026, 12:55:31 PM
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