CVE-2025-51865

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Ai2 playground web service (playground.allenai.org) LLM chat through 2025-06-03 is vulnerable to Insecure Direct Object Reference (IDOR), allowing attackers to gain sensitvie information via enumerating thread keys in the URL.

Published 2025-07-22. Last modified 2026-06-17.