CVE-2026-19111 - Insecure direct object reference in Strands Agents Tools memory tools

Strands Agents, an open-source SDK for building AI agents, has a vulnerability in its memory tools (mongodb_memory, elasticsearch_memory, and mem0_memory) where the namespace field (the key that separates data between different users) is exposed as a parameter that the LLM can control. An attacker could craft a prompt injection (tricking the AI by hiding instructions in its input) to forge a namespace and read, modify, or delete memories belonging to other users, or inject false memories into another user's data.