Gr2analyst [portable] Crack Link 【Browser】
Simultaneously, the contract (used by dozens of DeFi protocols) suffered from a re‑entrancy bug in its updateAnswer function. When an attacker called updateAnswer , the contract emitted an event that was picked up by a price‑watcher off‑chain bot. That bot, in turn, called back into updateAnswer to confirm the new price, creating a recursive loop that allowed the attacker to inflate the LINK balance of the aggregator contract.
Note: The entire incident was resolved , a testament to the efficacy of responsible disclosure and rapid governance response. Gr2analyst Crack LINK