CVE-2026-79786: Coroot

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their authorization codes upon consent approval, and exchange them for access tokens to hijack MCP sessions.

Affected products

• Coroot Coroot: from 1.20.2, up to and including 1.24.5

Published 2026-08-25. Last modified 2026-09-23.