CVE-2026-16618 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00203.

Exploitation none

Automatable yes

Technical Impact total

No data.

No data.

No data.

No data.

References

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

History

Tue, 04 Aug 2026 18:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-434
Metrics		cvssV3_1 `{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 04 Aug 2026 06:30:00 +0000

Type	Values Removed	Values Added
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.
Title		ImproveSEO <= 2.0.11 - Unauthenticated Arbitrary File Upload Leading to Remote Code Execution
References		https://wpscan.com/vulnerability/3754d4c0-1b67-49a4-a29a-7169446638d1/

MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-08-04T06:00:08.334Z

Updated: 2026-08-04T17:40:09.473Z

Reserved: 2026-07-22T14:45:28.693Z

Link: CVE-2026-16618

Vulnrichment

Updated: 2026-08-04T17:40:06.351Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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