An attacker exploited a remote code execution flaw in SGLang, an open-source inference engine, and ran code on one of NEAR AI’s inference servers last Sunday.

The attacker could also have seen requests being processed on that server that day, including requests sent in confidential mode, the company said earlier this week. That mode processes requests inside a trusted execution environment (TEE) designed to keep them private even from the company itself.

But the TEE “does not protect against a vulnerability in the software running inside the environment,” the company said. SGLang runs inside the TEE, which is how the attacker could reach requests there.