Is this vulnerability remotely exploitable over the internet?

Yes, if the Hasura GraphQL endpoint (including run_sql) is exposed over the network and accessible to an attacker, they can potentially exploit it remotely without needing local access to the host running PostgreSQL.

What level of access does an attacker need to exploit this issue?

The attacker must be able to send GraphQL requests that invoke run_sql with controlled SQL. In some deployments this may require authentication with a role that has admin-like privileges; in misconfigured environments, weaker roles (or even anonymous access) may be sufficient if authorization is not properly enforced.

What is the safest general fix pattern?

The most robust pattern is to eliminate generic SQL execution from the exposed API surface. Replace run_sql-style endpoints for untrusted clients with narrowly scoped operations built on parameterized queries or stored procedures, combined with strict role-based access control and minimized database privileges.

Severity:

CRITICAL RISK

(9.8)

OS Command Injection via SQL Interface (CWE-78) in Hasura GraphQL run_sql Endpoint

CVE-2021-47748

Published:

Jan 21, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Remote Code Execution

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Remote Code Execution

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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OS Command Injection via SQL Interface (CWE-78) in Hasura GraphQL run_sql Endpoint

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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