CVE-2021-47715Public exploitNetwork attack vectorHinoki check available

SSRF via unrestricted remote schema URL

Published Dec 22, 2025 · Updated Dec 22, 2025

SSRF in Hasura GraphQL Engine 1.3.3 allows remote attackers to reach internal network resources through the /v1/query endpoint. The add_remote_schema metadata operation accepts an attacker-supplied URL and makes the engine fetch it without restricting internal destinations. Exploitation requires network access to the metadata API and, when an admin secret is configured, valid administrative credentials; response errors can disclose the fetched body.

CVSS severity6.9
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

SSRF in Hasura GraphQL Engine 1.3.3 allows remote attackers to reach internal network resources through the /v1/query endpoint. The add_remote_schema metadata operation accepts an attacker-supplied URL and makes the engine fetch it without restricting internal destinations. Exploitation requires network access to the metadata API and, when an admin secret is configured, valid administrative credentials; response errors can disclose the fetched body.

The record

CVE
CVE-2021-47715
Published
Dec 22, 2025
Updated
Dec 22, 2025
Vendor
Hasura
Product
Hasura GraphQL Engine
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hasura · Hasura GraphQL Engineversion=1.3.3

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
5.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo