Description
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.
Published: 2026-05-15
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 15 May 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 15 May 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Wpgraphql
Wpgraphql wpgraphql
Vendors & Products Wordpress
Wordpress wordpress
Wpgraphql
Wpgraphql wpgraphql

Fri, 15 May 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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.
Title WordPress Plugin WPGraphQL 1.3.5 Denial of Service
First Time appeared Wpengine
Wpengine wpgraphql
Weaknesses CWE-770
CPEs cpe:2.3:a:wpengine:wpgraphql:1.3.5:*:*:*:*:*:*:*
Vendors & Products Wpengine
Wpengine wpgraphql
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, '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'}


Subscriptions

Wordpress Wordpress
Wpengine Wpgraphql
Wpgraphql Wpgraphql
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-15T21:14:26.041Z

Reserved: 2026-02-01T11:24:18.720Z

Link: CVE-2021-47959

cve-icon Vulnrichment

Updated: 2026-05-15T21:14:23.220Z

cve-icon NVD

Status : Received

Published: 2026-05-15T19:16:55.643

Modified: 2026-05-15T19:16:55.643

Link: CVE-2021-47959

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-15T21:00:09Z

Weaknesses