CVE-2026-16618

9.8 CRITICAL

Published 2026-08-04 · Updated 2026-08-04

AI risk analysis

Summary: The flaw allows unauthenticated users to upload executable PHP files due to improper file validation in the Improve SEO WordPress plugin, leading to remote code execution.
Exploitability: Exploitation is relatively easy as it requires uploading a malicious PHP file; no authentication is needed beforehand.
Blast radius: If exploited, this could lead to full control of the affected website or server, with potential impacts ranging from data theft to complete system compromise.
Prioritized remediation: Update the Improve SEO WordPress plugin to version 2.0.12 or later, which addresses this vulnerability.

rcewebphpwordpress

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-434

All references

https://wpscan.com/vulnerability/3754d4c0-1b67-49a4-a29a-7169446638d1/

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.