Security readout for executives and security teams
Plain-English summary
CVE-2021-47713 is a denial-of-service issue in Hasura GraphQL 1.3.3. A remote, unauthenticated attacker could send overly complex nested GraphQL queries to exhaust server resources and make the GraphQL endpoint unavailable. The impact is availability, not data theft or data modification based on the provided sources.
Executive priority
Prioritize remediation for public or business-critical Hasura GraphQL 1.3.3 services. The business risk is service outage and operational disruption. No source-provided evidence indicates data compromise or active exploitation.
Technical view
The vulnerability is categorized as CWE-770: allocation of resources without limits or throttling. The CVSS 4.0 score is 8.7, with network attack vector, low complexity, no privileges, and high vulnerable-system availability impact. The only affected version identified in the source bundle is Hasura GraphQL 1.3.3.
Likely exposure
Exposure is most likely where Hasura GraphQL 1.3.3 is internet-facing or reachable by untrusted clients. Internal deployments may still be exposed if users or services can submit arbitrary GraphQL queries.
Exploitation context
The source bundle includes an Exploit-DB reference, indicating public exploit material exists. The CVE is not listed as KEV, and the provided sources do not state active exploitation in the wild.
Researcher notes
Do not assume other Hasura versions are affected from the provided data. The advisory names version 1.3.3 only. Public exploit reference exists, but active exploitation is not supported by KEV or the provided sources.
Mitigation direction
- Identify whether Hasura GraphQL 1.3.3 is deployed.
- Review Hasura vendor guidance and release notes for fixed versions or recommended controls.
- Restrict untrusted network access to affected GraphQL endpoints where feasible.
- Apply query complexity, depth, size, and rate controls if supported by your deployment.
- Monitor endpoint resource usage and availability anomalies.
Validation and detection
- Inventory Hasura GraphQL versions across production and non-production environments.
- Confirm whether GraphQL endpoints are exposed to the internet or untrusted networks.
- Review access logs for unusually long or deeply nested GraphQL queries.
- Check monitoring for CPU, memory, or service restarts tied to GraphQL traffic.
- Verify implemented query limits and rate controls are active.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-770: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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.
Open ATT&CK lookupCVE-2021-47713 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49789CVE reference · exploit
- Hasura GraphQL Engine GitHub RepositoryCVE reference · product
- VulnCheck Advisory: Hasura GraphQL 1.3.3 Denial of Service via Malicious GraphQL QueryCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Allocation of Resources Without Limits or Throttling
Allocation of Resources Without Limits or Throttling represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.