EUVD-2026-67811

Quivr through 0.0.322 fails to validate ownership in prompt endpoints, allowing authenticated users to modify any prompt by identifier. Attackers with read-only access to shared brains can read exposed prompt identifiers and overwrite system prompts affecting all brain users...

Session Hijacking

MCP Ruby SDK is vulnerable to Session Hijacking. The vulnerability is due to missing session ownership validation in StreamableHTTPTransport, allowing attackers with a stolen session ID to execute tool calls within the victim's session...