CVE-2021-47959
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductWPGraphQL
PublishedMay 15, 2026
First seenMay 15, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Wpgraphql WPGraphQL | 1.3.5 | — |
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