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WordPress plugin

WPGraphQL <= 1.3.5 — Denial of Service

CVE-2021-31157Published · Updated

Action summary

Affected: ≤1.3.5Update to 1.3.6 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:N Integrity
None
A:L Availability
Low
Weakness
CWE-400 Uncontrolled Resource Consumption
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

WPGraphQL wp-graphql

  1. Affected≤ 1.3.5
  2. Patched in1.3.6

Update to 1.3.6 or newer.

You are affected if you run ≤ 1.3.5. Version 1.3.6 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WPGraphQL.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.3.6, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch WPGraphQL to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to DOLEV FARHI.

The WPGraphQL plugin for WordPress is vulnerable to Denial of Service via field duplication in versions up to, and including, 1.3.5. This makes it possible for unauthenticated attackers to rapidly duplicate fields and queries resulting in OOM and MySQL connection errors.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in WPGraphQL

All 10
More vulnerabilities in WPGraphQL
SeverityVulnerabilityCVEPublished
Medium5.3Unauthenticated Information Exposure
≤2.26.0Update to 2.26.1
CVE-2026-109703
Medium4.3Cross-Site Request Forgery
≤2.5.3Update to 2.5.4
CVE-2025-68604
High7.5Unauthenticated SQL Injection
<2.11.1Update to 2.11.1
CVE-2026-40762
Medium4.3Missing Authorization
≤2.9.1Update to 2.10
CVE-2026-33290
Medium5.5Authenticated (Editor+) Server-Side Request Forgery
≤1.14.5Update to 1.14.6
CVE-2023-23684

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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