How severe is CVE-2021-47748?

CVE-2021-47748 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-47748 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47748?

CVE-2021-47748 affects Hasura Graphql Engine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-47748?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2021-47748 have an EU (EUVD) identifier?

Yes. CVE-2021-47748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3661.

When was CVE-2021-47748 published?

CVE-2021-47748 was published on 2026-01-21 and last updated on 2026-06-17.

CVE-2021-47748

CVE-2021-47748 is a critical-severity vulnerability in Hasura Graphql Engine with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3661
Weakness: CWE-78
Affected product: Hasura Graphql Engine
Published: 2026-01-21
Last modified: 2026-06-17

Description

Hasura GraphQL 1.3.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary shell commands through SQL query manipulation. Attackers can inject commands into the run_sql endpoint by crafting malicious GraphQL queries that execute system commands through PostgreSQL's COPY FROM PROGRAM functionality.

Frequently asked questions

What is CVE-2021-47748?: Hasura GraphQL 1.3.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary shell commands through SQL query manipulation. Attackers can inject commands into the run_sql endpoint by crafting malicious GraphQL queries that execute system commands through PostgreSQL's COPY FROM PROGRAM functionality.
How severe is CVE-2021-47748?: CVE-2021-47748 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-47748 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47748?: CVE-2021-47748 affects Hasura Graphql Engine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-47748?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2021-47748 have an EU (EUVD) identifier?: Yes. CVE-2021-47748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3661.
When was CVE-2021-47748 published?: CVE-2021-47748 was published on 2026-01-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hasura:graphql_engine:1.3.3:*:*:*:*:*:*:*

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