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

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00203.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Unknown

Improve SEO

unknown

Version	Status	Constraints
`0`	affected	≤ 2.0.11

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

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/

Projects

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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

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

No weakness.

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