# CVE-2026-104719: CookieYes < 3.5.8 - Contributor+ Stored XSS via Cookie Category Scripts

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

The CookieYes  WordPress plugin before 3.5.8 does not correctly restrict who can write its cookie-category script fields, and does not sanitize or escape them, allowing users with the Contributor role to store JavaScript that executes in the browsers of site visitors and of an administrator reviewing the content.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Unknown / CookieYes: ≥ 0; < 3.5.8 (affected, semver). Source: CNA: WPScan

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

- exploit: https://wpscan.com/vulnerability/fd1e087e-99b2-4942-82ee-44160ad77151/ (CNA: WPScan)

## References

- https://wpscan.com/vulnerability/fd1e087e-99b2-4942-82ee-44160ad77151/ (CNA: WPScan; exploit, vdb-entry, technical-description)

## Provenance

- CNA: WPScan: https://www.cve.org/CVERecord?id=CVE-2026-104719; retrieved 2026-11-04; source updated 2026-11-04

Revision: ecf1d1855a1308bf87b6218b394d576ed8d88ef90a079b785745496925dd5983

Canonical: https://y2.dev/cve/CVE-2026-104719

## 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.