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CVE-2026-44840

HighPublished

Dgraph Vulnerable to DQL Injection via checkUserPassword GraphQL Query

Published: Jul 8, 2026
Updated: Jul 9, 2026
Assigning CNA: GitHub_M
Evidence observed: Sep 17, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.5%

Low · next 30 days

Percentile: 41.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Dgraph is an open source distributed GraphQL database. Prior to version 25.3.4, the `checkUserPassword` GraphQL query in Dgraph is vulnerable to DQL (Dgraph Query Language) injection. User-supplied password values are interpolated directly into a DQL `checkpwd()` query via `fmt.Sprintf` without any escaping or parameterization. An attacker can inject a password containing a double-quote character to break out of the DQL string literal and append arbitrary DQL query blocks. Version 25.3.4 patches the issue.

Sources

CVE-2026-44840-pocPoC
Docker lab reproducing CVE-2026-44840, a DQL injection in Dgraph's checkUserPassword GraphQL query, with exploit script and vulnerable vs patched comparison.

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