[Polymarket Suspected of Being Hacked, Over 300,000 Records Leaked] According to Dark Web Informer on the X platform, the decentralized prediction market platform Polymarket is suspected of being hacked, with over 300,000 records and an exploit toolkit leaked to a cybercrime forum. The attackers claim the data was obtained through undocumented API endpoints, pagination bypass, and CORS misconfiguration, with the extraction date listed as April 27, 2026. The leaked data includes approximately 10,000 pieces of user personally identifiable information, 41,000 comments, 485,000 market metadata entries, 250,000 active CLOB markets, 292 event submitter resolver addresses, and more. The attackers also provided proof-of-concept exploit codes for multiple vulnerabilities, including CVE-2025-62718 (CVSS 9.9), CORS misconfiguration, CVE-2024-51479 (CVSS 7.5), among others.