Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
MoLing is a computer-use and browser-use based MCP server. Prior to 0.5.0, when MoLing runs in SSE mode using `-l`, its `/sse` and `/message` HTTP endpoints do not authenticate requests and the `mcp-go` dependency sets `Access-Control-Allow-Origin: *`. A malicious web page can open a cross-origin `EventSource` to `/sse`, including a loopback listener, and read the `endpoint` event to obtain `sessionId`. After a victim running SSE mode visits that page, the attacker can use the disclosed `sessionId` against `/message` to send unauthorized MCP tool calls. Depending on the configured tools, those calls can read or write local files, execute commands or perform other actions. Binding only to loopback does not prevent this browser-mediated attack. This issue is fixed in version 0.5.0.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
🔴 gojue moling: unauthenticated cross-origin access in MCP SSE sessions (CVE-2026-62863) A malicious website can start a session and use tools to read or change local files and run commands. Patch → 0.5.0 https://cve.now/CVE-2026-62863?utm_source=x&utm_medium=social&utm_campaign=cvedotnow&utm_content=critical
🚨 CVE-2026-62863 (CVSS 9.6 Critical) Unauthenticated /sse & /message endpoints with wildcard CORS in MoLing MCP Server (< 0.5.0) let malicious web pages trigger localhost RCE. ⚡ Action: Upgrade MoLing to >= v0.5.0 or disable SSE mode. 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-62863/ https://t.co/B8vRGSzmz8
🚨 CVE-2026-62863 (CVSS 9.6 Critical) Unauthenticated /sse & /message endpoints with wildcard CORS in MoLing MCP Server (< 0.5.0) let malicious web pages trigger localhost RCE. ⚡ Action: Upgrade MoLing to >= v0.5.0 or disable SSE mode. 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-62863/ https://t.co/ZGxTRbrgMS