CVE-2026-41492

CRITICAL 9.8

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

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-200
Vendor	dgraph-io
Product	dgraph
Published	Apr 24, 2026
Last Updated	Apr 24, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

dgraph-io / dgraph

< 25.3.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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