# CVE-2026-123751: WP Duplicate <= 1.1.11 - Unauthenticated Arbitrary File Upload via Authentication Bypass

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

The WP Duplicate  WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to write arbitrary files to the server and achieve remote code execution. This vulnerability is being actively exploited in the wild.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Unknown / WP Duplicate: ≥ 0; ≤ 1.1.11 (affected, semver). Source: CNA: WPScan

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-434

## Exploit evidence

- exploit: https://wpscan.com/vulnerability/3a3556f0-fc36-4f68-b826-406a7b4c3f9e/ (CNA: WPScan)

## References

- https://wpscan.com/vulnerability/3a3556f0-fc36-4f68-b826-406a7b4c3f9e/ (CNA: WPScan; exploit, vdb-entry, technical-description)

## Provenance

- CNA: WPScan: https://www.cve.org/CVERecord?id=CVE-2026-123751; retrieved 2026-11-09; source updated 2026-11-09

Revision: 0b8f374053bc59f1283de1fb0dbb8f186772a60f0cfa153fbfe405e88cd0e19c

Canonical: https://y2.dev/cve/CVE-2026-123751

## 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.