CVE-2026-86249

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The fix restricts internal_port so that it carries only built-in and Tabbed services; requests for ordinary services sent to internal_port are rejected with EPREM / HTTP 403.\u00a0\n\n\n\nMitigation / Fix: upgrade to 1.18.0 or apply PR https://github.com/apache/brpc/pull/3525 .\u00a0\n\n\n\nUsers who rely on serving normal services on internal_port must move those requests to the port passed to Server::Start().", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>On a brpc::Server that sets both ServerOptions.auth and ServerOptions.internal_port, the HTTP built-in service exemption on internal_port can be abused to bypass authentication entirely. VerifyHttpRequest() returns true without checking any credential when a built-in service is requested on internal_port, and this verdict is not per - request: verification runs only for the first message of a connection and the result latches the connection. 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