CVE-2026-81032
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
NebulaGraph exposes its runtime configuration over an unauthenticated HTTP service. This service allows reading and writing gflags, enabling an attacker to change daemon behavior without restart.
Risk Assessment
An attacker can disable transport security, change log paths, or weaken password policies, potentially leading to system security compromise.
Recommendation
Restrict access to the HTTP service port, enable authentication or use a firewall, and update NebulaGraph to the latest version.
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Original NVD description (English source)
NebulaGraph exposes its runtime configuration over an unauthenticated HTTP service. Each daemon starts the web service defined in src/webservice/WebService.cpp, whose bind address defaults to all interfaces, and registers routes for reading and writing gflags alongside status and statistics. Neither the service nor its router carries any authentication, token check or address restriction. The read route returns the daemon's full set of runtime flag values, which includes the configured certificate, key and certificate-authority paths, the password file path, data directories and the transport-security enable flags. The write route parses a supplied map and applies each entry through the gflags runtime setter, so a caller able to reach the port can change the daemon's behaviour without restarting it, including disabling the transport-security flags, redirecting log files and altering flags such as failed_login_attempts and password_lock_time_in_secs. Public reports of this endpoint describe a single name, enable_authorize, being refused by the handler; at release 3.8.0 that refusal is not present and the handler applies every name it is given.