On June 21, 2026, Quicksilver Zone was exploited via unchecked ZK proof verification in the minting function. An OLPC token owner had previously set malicious parameters and renounced ownership, allowing an attacker to forge proofs and mint ~505K unbacked qATOM and ~10M qOSMO.

Quicksilver Zone (Cosmos Liquid Staking protocol) was exploited via Unchecked Proof Minting vulnerability. The attacker forged proofs to mint large amounts of unbacked qATOM (~505K) and qOSMO (~10M). The chain was halted; actual drained loss was limited (~$3,500). The team is working with Cosmos Hub and Osmosis to burn fake tokens and recover.