Cybersecurity Headlines Metro bug, more social bans, leaky Moltbook
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Feb 4, 2026 A widespread React Native Metro bug has left thousands of servers exposed. Greece and Spain aim to ban social media for underage users and push broader youth protections. A misconfigured service leaked agent tokens and private messages, highlighting risks of vibe coding. Changes in vulnerability notice practices and a probe into possible sanctions breaches round out the security headlines.
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Widespread Metro Bug Exposes Thousands
- A Metro bug in React Native left about 3,500 servers exposed, creating a large attack surface for arbitrary executable control.
- The issue was disclosed by JFrog, with exploitation observed starting December 21, highlighting rapid attacker adoption.
European Push For Youth Social Bans
- Greece and Spain are moving to ban social media for younger teens, reflecting growing regulatory focus on youth online safety.
- Spain also plans to hold social media executives personally responsible for hate speech, indicating tougher cross-border regulation efforts.
Moldbook's Rapid Rise And Big Leak
- Moldbook, an AI-agent-focused forum, was created quickly and attracted over a million agents before security checks.
- Researchers found a misconfigured Supabase database that exposed accounts, tokens, messages, and allowed content edits and deletions.