Description
The WPForms Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.10.1.1 via the ajax_chunk_upload_finalize function. This is due to the file type validation occurring after chunk metadata and file contents have already been written to disk, and the assembled file not being deleted upon validation failure. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WPForms | WPForms Pro | ≤ 1.10.1.1 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
Nxploited/CVE-2026-10818 ★ 5 · Jul 26, 2026
WPForms Pro <= 1.10.1.1 - Unauthenticated Arbitrary File Write via Chunked Upload Init/Finalize Ordering
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- WPForms Pro <= 1.10.1.1 - Unauthenticated Arbitrary File Upload http/cves/2026/CVE-2026-10818.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.