Ostium paused trading on its platform this week after an apparent oracle exploit targeted its OLP liquidity vault. Security firms tracking the incident estimate losses between $18 million and $22 million. The team advised users to revoke contract approvals immediately.
The exploit and the response
The exploit appears to have manipulated oracle price feeds affecting the OLP vault. Ostium's team detected unusual activity and halted trading to prevent further damage. They urged users to revoke any approvals tied to the affected contracts. The exact method of the exploit is still under investigation.
What users need to know
Users who interacted with the OLP vault should revoke contract approvals as a precaution. The team has not yet announced a timeline for resuming trading. Security firms are analyzing the on-chain data to trace the attacker.
Oracle exploits remain a persistent vulnerability in DeFi. This incident adds to a list of similar attacks this year. Ostium has not disclosed whether it will pursue reimbursement or legal action.
The team is expected to release a post-mortem in the coming days. For now, the platform remains paused and users are advised to secure their assets.




