WPGraphQL Smart Cache before 2.3.3 contains an uncontrolled resource consumption vulnerability that allows unauthenticated attackers to persist unlimited query documents via the Automatic Persisted Query handler. Attackers can send distinct queries with matching SHA-256 queryId values, including batched operations, to grow the wp_posts table without bound and degrade database performance.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9 · wpgraphqlNVD modified 2026-10-30 15:19
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5p5r-f66g-r4vp vendor-advisory
- https://github.com/wp-graphql/wp-graphql/commit/80c021c42f4d4969e1b41760a08b4faf3c544a9e patch
- https://github.com/wp-graphql/wp-graphql/blob/wp-graphql-smart-cache/v2.3.2/plugins/wp-graphql-smart-cache/src/Document.php technical-description
- https://github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql-smart-cache%2Fv2.3.3 release-notes
- https://github.com/wp-graphql/wp-graphql product
- https://www.vulncheck.com/advisories/wpgraphql-smart-cache-before-2.3.3-unbounded-persisted-query-storage-dos third-party-advisory