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.
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 |
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Project Subscriptions
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Advisories
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Fixes
Solution
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Workaround
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References
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 | |
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Projects
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MITRE
Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2026-08-04T06:00:08.334Z
Reserved: 2026-07-22T14:45:28.693Z
Link: CVE-2026-16618
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses
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