CVE-2021-47959CWE-770

WordPress Plugin WPGraphQL 1.3.5 Denial of Service

High · published May 15, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
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
EPSS
0.00451 · 38.2th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-05-15T18:36Z
EPSS history
Timeline
  • 15 MAY 18:36Z
    WordPress Plugin WPGraphQL 1.3.5 Denial of Service
    cvelistv5