CVE-2021-47959
HIGH EPSS 36.0%
Published May 15, 20261mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
Published May 15, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
36.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-770
References 3
- exploit-db.com https://www.exploit-db.com/exploits/49807
- vulncheck.com https://www.vulncheck.com/advisories/wordpress-plugin-wpgraphql-denial-of-service
- wpgraphql.com https://www.wpgraphql.com/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.