CVE-2026-44895: Yoda-Digital Mcp-GitLab-Server

Critical severity, CVSS 9.2. EPSS: 0.6% chance of exploitation in the next 30 days.

GitLab MCP Server lets an AI agent talk directly to GitLab. Prior to 0.6.0, the HTTP transport in src/transport.ts ships with no authentication layer at all and a wildcard Access-Control-Allow-Origin: * on every response. The structural defect is that the SSE server stands up a stateful, mutation-capable RPC endpoint that is backed by the operator's GITLAB_PERSONAL_ACCESS_TOKEN without any inbound credential check, then advertises itself to every cross-origin browser context via the wildcard CORS header. The httpServer.listen(port) call at line 97 also passes no host argument, so the bind defaults to 0.0.0.0 and exposes the auth-less surface on every interface. This vulnerability is fixed in 0.6.0.

Affected products

• Yoda-Digital Mcp-GitLab-Server: before 0.6.0 (fixed in 0.6.0)

Published 2026-05-26. Last modified 2026-07-24.