CVE-2026-41492

Description

Dgraph is an open source distributed GraphQL database. Prior to 25.3.3, Dgraphl exposes the process command line through the unauthenticated /debug/vars endpoint on Alpha. Because the admin token is commonly supplied via the --security "token=..." startup flag, an unauthenticated attacker can retrieve that token and replay it in the X-Dgraph-AuthToken header to access admin-only endpoints. This is a variant of the previously fixed /debug/pprof/cmdline issue, but the current fix is incomplete because it blocks only /debug/pprof/cmdline and still serves http.DefaultServeMux, which includes expvar's /debug/vars handler. This vulnerability is fixed in 25.3.3.

CVSS Metrics

• v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Techniques & Countermeasures

• CWE-200•Exposure of Sensitive Information to an Unauthorized Actor

  The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Systems

• dgraph-io•dgraph

  < 25.3.3

References (2)

• https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q
• https://github.com/dgraph-io/dgraph/releases/tag/v25.3.3