CVE-2026-39889 PraisonAI has Unauthenticated SSE Event Stream Exposes All Agent Activity in A2U Server

PraisonAI is a multi-agent teams system. Prior to 4.5.115, the A2U Agent-to-User event stream server in PraisonAI exposes all agent activity without authentication. The createa2uroutes function registers the following endpoints with NO authentication checks: /a2u/info, /a2u/subscribe,...

CVE-2026-34953

Vulnerability: PraisonAI OAuthManager.validate_token() bug allows unauthenticated access. If a token is not in the internal store (which is empty by default), the current implementation falls through and returns True, granting full access to MCP server tools. Impact: attacker can call all registe...