{"api_version":"1","generated_at":"2026-07-09T00:24:36+00:00","cve":"CVE-2026-49471","urls":{"html":"https://cve.report/CVE-2026-49471","api":"https://cve.report/api/cve/CVE-2026-49471.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-49471","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49471"},"summary":{"title":"Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE","description":"Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach this API from any browser and write arbitrary content to the agent's persistent memory store, which the agent reads and acts on autonomously. 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Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach this API from any browser and write arbitrary content to the agent's persistent memory store, which the agent reads and acts on autonomously. Combined with execute_shell_command using shell=True, this creates a remote code execution chain requiring only that the victim visit a malicious webpage while Serena is running. This issue is fixed in version v1.5.2.","Type":"Description","Title":"Serena: Unauthenticated Flask dashboard on fixed port enables DN"}]}}}