CVE-2026-16618
Critical · 9.8CVSS
9.8
EPSS
0.8%
Published
Aug 4, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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