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TI-2021-22572 Aliases CVE-2021-47959GHSA-3mgf-xgf9-2wg2

WordPress Plugin WPGraphQL 1.3.5 Denial of Service

Priority HIGH 77CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

WordPress Plugin WPGraphQL 1.3.5 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server resources by sending batched GraphQL queries with duplicated fields. Attackers can send POST requests to the GraphQL endpoint with amplified field duplication payloads to trigger server out-of-memory conditions and MySQL connection errors.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00451 39th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WPGraphQLWPGraphQL1.3.5—No fix listedCNA
  • WPGraphQL VendorWPGraphQL Affected 1.3.5 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47959
  2. 2026-10-03 Alias added: GHSA-3mgf-xgf9-2wg2

References

Exploit 1

Other 1

  • TI-2026-39574 WPGraphQL has deprecated `user` field on SendPasswordResetEmailPayload that leaks user… CVSS 4.0MEDIUM 6.9
  • TI-2026-22282 WPGraphQL Repo Vulnerable to Command Injection via Unsanitized GitHub Actions Expression in Release Workflow CVSS 3.1HIGH 7.7
  • TI-2026-60306 WPGraphQL: Contributor can publish and modify posts without the required capabilities via updatePost CVSS 3.1MEDIUM 5.4
  • TI-2026-25701 Missing authorization in WPGraphQL wp-graphql CVSS 3.1MEDIUM 4.3
  • TI-2026-83176 Email flooding in WPGraphQL via aliased password reset mutations CVSS 4.0MEDIUM 6.9
  • TI-2026-83174 Unbounded persisted query storage in WPGraphQL Smart Cache CVSS 4.0MEDIUM 6.9
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences