Security researchers reported a critical Moltbook exposure caused by an unauthenticated database/API access issue that allowed enumeration of agent records (e.g., GET /api/agents/{id}) and leakage of email addresses, JWT login_tokens, and third-party api_keys, enabling agent hijacking and downstream abuse of connected services. Separately, Cal.com Cloud was found vulnerable to a chained set of broken access controls and signup/invite-token logic flaws that enabled complete account takeover and access to sensitive booking data (attendee details, emails, and booking histories) at scale, including organizational accounts.
In parallel, SentinelLabs documented that roughly 175,000 internet-exposed Ollama instances were reachable due to common deployment misconfiguration (binding to 0.0.0.0/public interfaces), creating conditions for arbitrary code execution and access to external resources—especially where tool-calling features were enabled. A distinct IoT case study described Molekule air purifiers exposing fleet-wide telemetry because an AWS Cognito Identity Pool permitted unauthenticated access to AWS IoT Core MQTT subscriptions, leaking device shadow data (e.g., Wi‑Fi SSIDs, MAC addresses, device names, sensor readings) for ~100,000 devices; the disclosed policy reportedly allowed read/subscribe access but not device control without per-device certificates.

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8 events from the most recent confirmed update back to the earliest known activity.
The Moltbook report states the company had not confirmed any patch and was unresponsive to vulnerability disclosures at the time of publication. Researchers recommended revoking exposed keys, sandboxing agents, and auditing for compromise.
By February 1, 2026, researchers reported that Moltbook exposed email addresses, login tokens, and API keys through an unauthenticated API or database misconfiguration with predictable agent IDs. They also said the platform lacked account-creation rate limiting, allowing a single OpenClaw agent to create hundreds of thousands of fake accounts and inflate user counts.
On January 30, 2026, SentinelLABS reported that roughly 175,000 Ollama hosts were publicly accessible, often because administrators changed the default local-only bind setting to a public interface. The report warned that exposed tool-calling and weak authentication could enable remote code execution and unauthorized access to external systems.
A vulnerability report published on January 29, 2026 described unauthenticated access to the MQTT broker used by Molekule IoT air purifiers. The disclosure indicates the devices' messaging infrastructure could be reached without authentication.
Cal.com said it fixed the account takeover issue in version 6.0.8 after the flaws were identified. Additional fixes to restrict internal route handler access were released within days to address related exposure paths.
On January 26, 2026, researchers reported discovering three connected vulnerabilities in Cal.com Cloud, including broken invite-flow validation and an IDOR issue. The chain allegedly allowed attackers to overwrite victim passwords, hijack accounts, and access or delete booking data.
Moltbook, an AI-agent social network created by Octane AI's Matt Schlicht, launched in late January 2026. The later vulnerability report ties exposed data and account abuse to this newly launched platform.
Researchers from SentinelLABS, working with Censys, conducted a 293-day internet scanning effort to measure public exposure of Ollama servers. Over the course of the study they recorded 7.23 million observations across 130 countries and 4,032 autonomous system networks.
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