CVE-2026-59804

The record

Midscene Bridge Server through 1.10.3, fixed in commit 86f4118, contains a missing authentication and CORS misconfiguration vulnerability that allows unauthenticated remote attackers to hijack active bridge sessions by opening a cross-origin WebSocket connection to the local Socket.IO server, which performs no Origin header validation and requires no authentication token. Attackers can connect from any web page visited by the victim to seize the single-client slot, intercept and inject automation commands, exfiltrate command-payload data, or unconditionally terminate the server by supplying the MIDSCENE_BRIDGE_SIGNAL_KILL query parameter.

Affected packages

Related vulnerabilities

• CVE-2026-63399 Coop is an open source review and moderation tool from ROOST. CWE-306
• CVE-2026-63396 Coop is an open source review and moderation tool from ROOST. CWE-306
• CVE-2026-63377 TAKO AI Agent for Okta is a local-first AI agent that helps Okta administrators query… CWE-306
• CVE-2026-62863 MoLing is a computer-use and browser-use based MCP server. CWE-306
• CVE-2026-62302 MyTube is a self-hosted downloader and player for several video websites. CWE-306
• CVE-2026-62264 PDF Reader MCP is a Model Context Protocol server for reading PDF documents. CWE-306
• CVE-2026-119705 SerpBear before 3.1.1 contains a missing authentication vulnerability in… CWE-306
• CVE-2026-61730 SOCFortress CoPilot focuses on providing a single pane of glass for all your security… CWE-306