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cryptoJun 5, 2026, 6:26 AM

Critical Bug in Zcash Orchard Pool Allowed Unlimited Fake ZEC Minting

Shielded Labs discovered a critical vulnerability in Zcash's Orchard privacy pool that could have enabled unlimited minting of untraceable fake ZEC tokens since its activation in 2022. The bug was fixed urgently, but there is no way to know if it was exploited.

ZECUSD

Security firm Shielded Labs reported a critical vulnerability in the Orchard privacy pool of the Zcash network. The bug, which existed since Orchard's activation in 2022, could have allowed an attacker to mint an unlimited number of untraceable fake ZEC tokens.

The flaw was detected in May using Opus 4.8, an AI model by Anthropic, and was patched in an emergency update. However, Shielded Labs stated there is no cryptographic method to determine whether the vulnerability was exploited before the fix.

To restore confidence in the integrity of ZEC supply, the company has proposed network upgrades with new accounting and security measures.

Following the news and broader market weakness, ZEC fell 40% over the past day to $340.

Source: ForkLog