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CVE-2026-44840— Dgraph Vulnerable to DQL Injection via checkUserPassword GraphQL Query

Quick assessment

Affected
dgraph-io dgraph
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Dgraph是Dgraph组织开源的一个具有图形后端的水平可扩展分布式 GraphQL 数据库。 Dgraph 25.3.4之前版本存在输入验证错误漏洞，该漏洞源于 GraphQL查询中存在DQL注入，用户提供的密码值直接通过 插入到DQL 查询中未经过转义或参数化，攻击者可以注入包含双引号字符的密码来突破DQL字符串字面量并添加任意DQL查询块。

CVSS 7.5 · High EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
dgraph-io dgraph < 25.3.4 affected
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I. Basic Information for CVE-2026-44840

Vulnerability Information
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Vulnerability Title
Dgraph Vulnerable to DQL Injection via checkUserPassword GraphQL Query
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
数据查询逻辑中特殊元素的不当中和
Source: CVE Program / CVE List V5
Vulnerability Title
Dgraph 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dgraph是Dgraph组织开源的一个具有图形后端的水平可扩展分布式 GraphQL 数据库。 Dgraph 25.3.4之前版本存在输入验证错误漏洞，该漏洞源于`checkUserPassword` GraphQL查询中存在DQL注入，用户提供的密码值直接通过`fmt.Sprintf`插入到DQL `checkpwd()`查询中未经过转义或参数化，攻击者可以注入包含双引号字符的密码来突破DQL字符串字面量并添加任意DQL查询块。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
dgraph-io dgraph < 25.3.4 -

II. Public POCs for CVE-2026-44840

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 5962 chars
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III. Intelligence Information for CVE-2026-44840

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Patches & Fixes for CVE-2026-44840 (1)

Vendor Advisories for CVE-2026-44840 (1)

Vendor Pages for CVE-2026-44840 (1)

IV. Related Vulnerabilities

Same product: dgraph
Same vendor: dgraph-io
Same weakness: CWE-943

V. Comments for CVE-2026-44840

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