CVE-2026-41492
Unauthenticated Admin Token Disclosure Leading to Authentication Bypass via /debug/vars in Dgraph
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.
INFO
Published Date :
April 24, 2026, 7:17 p.m.
Last Modified :
April 28, 2026, 6:28 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update Dgraph to version 25.3.3 or later.
- Remove unneeded security token flags.
- Restrict access to /debug/vars endpoint.
- Review access controls for admin endpoints.
Public PoC/Exploit Available at Github
CVE-2026-41492 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41492.
| URL | Resource |
|---|---|
| https://github.com/dgraph-io/dgraph/releases/tag/v25.3.3 | Release Notes |
| https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q | Exploit Vendor Advisory |
| https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41492 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41492
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Reproducer labs for vulnerabilities and artifacts analyzed by Hexmortem Labs. Each lab is paired with the published analysis at hexmortem.com/research/.
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41492 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41492 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 28, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:dgraph:dgraph:*:*:*:*:*:go:*:* versions up to (excluding) 25.3.3 Added Reference Type GitHub, Inc.: https://github.com/dgraph-io/dgraph/releases/tag/v25.3.3 Types: Release Notes Added Reference Type CISA-ADP: https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 24, 2026
Action Type Old Value New Value Added Reference https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q -
New CVE Received by [email protected]
Apr. 24, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-200 Added Reference https://github.com/dgraph-io/dgraph/releases/tag/v25.3.3 Added Reference https://github.com/dgraph-io/dgraph/security/advisories/GHSA-vvf7-6rmr-m29q