CVE-2021-47959

Summary

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.

Affected Software

Weaknesses

• CWE-770: Allocation of Resources Without Limits or Throttling

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

References

• https://www.exploit-db.com/exploits/49807
• https://www.wpgraphql.com/
• https://www.vulncheck.com/advisories/wordpress-plugin-wpgraphql-denial-of-service

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