Zcash discloses critical Orchard bug; ZEC drops over 45% on June 5, 2026

On June 5, 2026, Zcash's ZEC fell by more than 45%, sliding from above $600 to around $300 within hours after a disclosure about a critical Orchard vulnerability. The issue, found on May 29, 2026 and fixed by June 2, 2026, could have enabled undetectable counterfeiting of ZEC, though the authors said prior exploitation was unlikely and cannot be proven either way due to privacy.