# CVE-2026-90964: Essential Real Estate < 5.3.5 - Unauthenticated Arbitrary Email Sending

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

The Essential Real Estate WordPress plugin before 5.3.5 does not restrict the recipient of one of its contact email actions, allowing unauthenticated users to send emails to arbitrary addresses with an attacker-controlled sender header and message body through the site.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Unknown / Essential Real Estate: ≥ 0; < 5.3.5 (affected, semver). Source: CNA: WPScan

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-284

## Exploit evidence

- exploit: https://wpscan.com/vulnerability/851b3747-823c-4f38-a449-117acf4b6435/ (CNA: WPScan)

## References

- https://wpscan.com/vulnerability/851b3747-823c-4f38-a449-117acf4b6435/ (CNA: WPScan; exploit, vdb-entry, technical-description)

## Provenance

- CNA: WPScan: https://www.cve.org/CVERecord?id=CVE-2026-90964; retrieved 2026-11-05; source updated 2026-11-05

Revision: 6c61e255d3e0399f6a3a56a75979c95de4e7c4dbb69c1a718c68496bfa25f3c1

Canonical: https://y2.dev/cve/CVE-2026-90964

## 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.