CVE-2026-41492CWE-200

Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph

Critical · published April 24, 2026

CVSS v3.1
9.8
EPSS
2%
Percentile
84.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02463 · 84.3th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-04-24T18:29Z
EPSS history
Timeline
  • 24 APR 18:29Z
    Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph
    cvelistv5