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CVE Record

CVE-2021-47715: Hasura GraphQL 1.3.3 Server-Side Request Forgery via Remote Schema Injection

Hasura GraphQL 1.3.3 contains a server-side request forgery vulnerability that allows attackers to inject arbitrary remote schema URLs through the add_remote_schema endpoint. Attackers can exploit the vulnerability by sending crafted POST requests to the /v1/query endpoint with malicious URL definitions to potentially access internal network resources.

MediumCVSS 6.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-47715 is an SSRF issue in Hasura GraphQL 1.3.3. An attacker may be able to make the server contact URLs they choose through remote schema configuration, potentially reaching internal services that are not directly internet-facing.

Executive priority

Prioritize internet-exposed or weakly restricted Hasura 1.3.3 systems. The business risk is internal resource exposure through the application server, with public exploit material but no confirmed active exploitation in the supplied sources.

Technical view

The vulnerability is tied to remote schema injection through the add_remote_schema operation on /v1/query. Sources describe arbitrary remote schema URLs causing server-side requests. The record lists CWE-918 and CVSS v4.0 score 6.9. Only Hasura GraphQL 1.3.3 is identified as affected.

Likely exposure

Exposure is most likely where Hasura GraphQL 1.3.3 is deployed and /v1/query or remote schema administration is reachable by untrusted users or networks.

Exploitation context

An ExploitDB reference exists, but the source bundle does not show CISA KEV listing or confirmed active exploitation. Treat exploit availability as a validation priority, not proof of compromise.

Researcher notes

Evidence is narrow: affected version 1.3.3, SSRF via remote schema URL injection, and public exploit reference. The bundle does not name a patch, commit, broader version range, or confirmed exploitation campaign.

Mitigation direction

  • Identify and prioritize any Hasura GraphQL 1.3.3 deployments.
  • Check Hasura vendor guidance for fixed versions or supported remediation.
  • Restrict /v1/query and remote schema administration to trusted operators only.
  • Limit Hasura outbound network access to approved destinations where feasible.
  • Remove unexpected or untrusted remote schema definitions.

Validation and detection

  • Confirm the running Hasura GraphQL version on each deployment.
  • Review whether /v1/query is reachable from untrusted networks.
  • Inspect metadata for remote schemas pointing to unexpected URLs.
  • Review logs for add_remote_schema activity from unusual users or sources.
  • Check egress logs for Hasura requests to internal or sensitive endpoints.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-918: Information exposure and cloud metadata lookup

Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-47715 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.9 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
3Timeline events
1ADP providers
4Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.9CVSS 4.0MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L——VulnCheck
5.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N3.91.4VulnCheck

Vulnerability scoring details

Base CVSS 4.0 score

6.9Medium
CVSS 4.0 vector shape for CVE-2021-47715Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
HasuraHasura GraphQL1.3.3Listed
Weakness

CWE details

CWE-918

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.