The Advance Guest Post WordPress plugin through 1.9 does not properly restrict or validate file uploads, authorizing an upload action with a nonce exposed to every front-end visitor and checking only a file's leading bytes, allowing unauthenticated users to upload arbitrary PHP files and execute code remotely.
Successful exploitation additionally requires the target to run PHP 7.x; on PHP 8.0 and later the vulnerable code path raises a fatal error before the file is written.
Successful exploitation additionally requires the target to run PHP 7.x; on PHP 8.0 and later the vulnerable code path raises a fatal error before the file is written.
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Advisories
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Fixes
Solution
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Workaround
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References
History
Fri, 13 Nov 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The Advance Guest Post WordPress plugin through 1.9 does not properly restrict or validate file uploads, authorizing an upload action with a nonce exposed to every front-end visitor and checking only a file's leading bytes, allowing unauthenticated users to upload arbitrary PHP files and execute code remotely. Successful exploitation additionally requires the target to run PHP 7.x; on PHP 8.0 and later the vulnerable code path raises a fatal error before the file is written. | |
| Title | Advance Guest Post <= 1.9 - Unauthenticated Arbitrary File Upload via featured_action | |
| References |
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Projects
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Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2026-11-13T06:00:07.125Z
Reserved: 2026-10-27T15:38:38.123Z
Link: CVE-2026-118064
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Status : Deferred
Published: 2026-11-13T06:16:52.897
Modified: 2026-11-13T15:45:24.843
Link: CVE-2026-118064
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OpenCVE Enrichment
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Weaknesses
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