CVE-2026-77938 Letta through 0.16.8 Credential Exposure via Tool Sandbox Environment Inheritance

Letta through 0.16.8 contains an information disclosure vulnerability that allows users running tools to read server secrets because LocalSandbox subprocesses inherit the full server environment. Attackers can run code via POST /v1/tools/run or custom tools to read LETTAPGURI, POSTGRESPASSWORD, a...