CVE-2021-47959

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/49807
https://www.vulncheck.com/advisories/wordpress-plugin-wpgraphql-denial-of-service
https://www.wpgraphql.com/

Configurations

No configuration.

History

15 May 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-15 19:16

Updated : 2026-05-18 17:05

NVD link : CVE-2021-47959

Mitre link : CVE-2021-47959

CVE.ORG link : CVE-2021-47959

JSON object : View

Products Affected

No product.

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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