Description
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.
CVSS 7.1EPSS 0.219%Risk 0.72
View source- Published
- 2026-08-25 19:16:54
- Affected versions
- unknown
- Type
- Web application
- Last modified
- 2026-08-25 19:16:54
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N