# CVE-2026-119699: WPGraphQL Smart Cache before 2.3.3 Unbounded Persisted Query Storage DoS

Status: published. Published: 2026-10-30. Updated: 2026-11-04.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/wp-graphql/wp-graphql/commit/80c021c42f4d4969e1b41760a08b4faf3c544a9e

## Affected products and versions

- WPGraphQL / WPGraphQL Smart Cache: ≥ 0; < 2.3.3 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L; source: CNA: VulnCheck

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.45% as of 2026-11-04; percentile 39.52%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-770

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5p5r-f66g-r4vp (CNA: VulnCheck; vendor-advisory)

- https://github.com/wp-graphql/wp-graphql/commit/80c021c42f4d4969e1b41760a08b4faf3c544a9e (CNA: VulnCheck; patch)

- https://github.com/wp-graphql/wp-graphql/blob/wp-graphql-smart-cache/v2.3.2/plugins/wp-graphql-smart-cache/src/Document.php (CNA: VulnCheck; technical-description)

- https://github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql-smart-cache%2Fv2.3.3 (CNA: VulnCheck; release-notes)

- https://github.com/wp-graphql/wp-graphql (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/wpgraphql-smart-cache-before-2.3.3-unbounded-persisted-query-storage-dos (CNA: VulnCheck; third-party-advisory)

- https://github.com/wp-graphql/wp-graphql (disclosure@vulncheck.com)

- https://github.com/wp-graphql/wp-graphql/blob/wp-graphql-smart-cache/v2.3.2/plugins/wp-graphql-smart-cache/src/Document.php (disclosure@vulncheck.com)

- https://github.com/wp-graphql/wp-graphql/commit/80c021c42f4d4969e1b41760a08b4faf3c544a9e (disclosure@vulncheck.com)

- https://github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql-smart-cache%2Fv2.3.3 (disclosure@vulncheck.com)

- https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5p5r-f66g-r4vp (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/wpgraphql-smart-cache-before-2.3.3-unbounded-persisted-query-storage-dos (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-119699; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119699; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119699; retrieved 2026-11-04; source updated Not reported

Revision: a92e7d918e30c2df0ee531b0d8f5db2b6e63713f9bf37926d7295df20b7392ad

Canonical: https://y2.dev/cve/CVE-2026-119699

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.