VULNERABILITY INTELLIGENCE
CVE-2026-16618
CVSS score9.8 CRITICAL
EPSS probability0.83%
CISA KEVNot currently listed
Published2026-08-04
Last modified2026-08-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- CWE-434: Unrestricted Upload of File with Dangerous Type