CVE-2026-40173 affects Dgraph, an open source distributed GraphQL database. In Dgraph versions 25.3.1 and earlier, the /debug/pprof/cmdline endpoint is registered on the default mux and is reachable without authentication. That endpoint exposes the full process command line, which can include the administrative token when Dgraph is started with the --security "token=..." flag. An unauthenticated attacker can request /debug/pprof/cmdline, recover the leaked admin token from the process arguments, and then supply that token in the X-Dgraph-AuthToken header to access admin-only endpoints such as /admin/config/cache_mb. In practice, this defeats the intended protection enforced by the adminAuthHandler because the secret used for validation is itself exposed through an unauthenticated debug endpoint. The issue is fixed in Dgraph 25.3.2.
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