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EUVD-2026-291564

fkie_cve-2026-40173

Dgraph is an open source distributed GraphQL database. Versions 25.3.1 and prior contain an unauthenticated credential disclosure vulnerability where the /debug/pprof/cmdline endpoint is registered on the default mux and reachable without authentication, exposing the full process command line including the admin token configured via the --security "token=..." startup flag. An attacker can retrieve the leaked token and reuse it in the X-Dgraph-AuthToken header to gain unauthorized access to admin-only endpoints such as /admin/config/cache_mb, bypassing the adminAuthHandler token validation. This enables unauthorized privileged administrative access including configuration changes and operational control actions in any deployment where the Alpha HTTP port is reachable by untrusted parties. This issue has been fixed in version 25.3.2.

GHSA-95mq-xwj4-r47p — Dgraph: Unauthenticated /debug/pprof/cmdline discloses admin auth token, enabling unauthorized access to protected Alph…

Affected: Go: github.com/dgraph-io/dgraph/v25, Go: github.com/dgraph-io/dgraph/v24, Go: github.com/dgraph-io/dgraph

### Summary An unauthenticated debug endpoint in Dgraph Alpha exposes the full process command line, including the configured admin token from `--security "token=..."`.

This does not break token validation logic directly; instead, it discloses the credential and enables unauthorized admin-level access by reusing the leaked token in `X-Dgraph-AuthToken`.

### Details The behavior occurs entirely within core Alpha HTTP routing and does not require any external proxy, plugin, or non-core integration.

The core issue is not that admin token protection is absent, but that the protected secret is exposed in cleartext through an unauthenticated core debug endpoint.

Relevant code paths: - `dgraph/cmd/alpha/run.go:17` imports `net/http/pprof`, which registers `/debug/pprof/*` handlers on the default mux. - `dgraph/cmd/alpha/run.go:533` uses `http.Handle("/", audit.AuditRequestHttp(baseMux))`, so default-mux handlers remain reachable. - `dgraph/cmd/alpha/admin.go:52` enforces admin token checks in `adminAuthHandler` for admin endpoints. - `dgraph/cmd/alpha/admin.go:74` shows `/admin/config/cache_mb` behind `adminAuthHandler`.

Credential-exposure chain: 1. `/debug/pprof/cmdline` is reachable without authentication. 2. Its output includes the configured admin token from process arguments. 3. The disclosed token is accepted by `adminAuthHandler` when sent as `X-Dgraph-AuthToken`. 4. An attacker gains unauthorized access to admin-only functionality.

Observed local evidence (safe valid…