9.8
Critical
CVE-2026-16618 The Improve SEO WordPress plugin through 2.0.11 does not properly validate uploaded files, checking only the file…
Description
The Improve SEO WordPress plugin through 2.0.11 does not properly validate uploaded files, checking only the file content type while writing the file with the attacker-supplied extension into a publicly accessible directory, allowing unauthenticated users to upload executable PHP files and achieve remote code execution.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Improve SEO 2.0 | earliest → 2.0.11 | No fix stated |