Toxic Combinations: When Cross-App Permissions Stack into Risk
Apr 22, 2026
SaaS Security / AI Agents
On January 31, 2026, researchers disclosed that Moltbook, a social network built for AI agents, had left its database wide open, exposing 35,000 email addresses and 1.5 million agent API tokens across 770,000 active agents. The more worrying part sat inside the private messages. Some of those conversations held plaintext third-party credentials, including OpenAI API keys shared between agents, stored in the same unencrypted table as the tokens needed to hijack the agent itself. This is the shape of a toxic combination: a permission breakdown between two or more applications, bridged by an AI agent, integration, or OAuth grant, that no single application owner ever authorized as its own risk surface. Moltbook's agents sat at that bridge, carrying credentials for their host platform and for the outside services their users had wired them into, in a place that neither platform owner had line of sight into. Most SaaS access reviews still examine one application at a time, which is...