The MaxUpload – Big File Uploads – Increase Maximum File Upload Size plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.4.0 via the handle_upload function. This is due to a filename-validation mismatch in the handle_upload function where extension and MIME checks are applied to the uploaded chunk's filename but not to the final assembled filename derived from the resumableFilename parameter. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
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Affected Vendors & Products
References
History
Mon, 17 Aug 2026 17:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 11:30:00 +0000
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Sadathimel
Sadathimel maxupload – Big File Uploads – Increase Maximum File Upload Size Wordpress Wordpress wordpress |
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Sadathimel
Sadathimel maxupload – Big File Uploads – Increase Maximum File Upload Size Wordpress Wordpress wordpress |
Sat, 15 Aug 2026 02:45:00 +0000
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| Description | The MaxUpload – Big File Uploads – Increase Maximum File Upload Size plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.4.0 via the handle_upload function. This is due to a filename-validation mismatch in the handle_upload function where extension and MIME checks are applied to the uploaded chunk's filename but not to the final assembled filename derived from the resumableFilename parameter. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. | |
| Title | MaxUpload <= 1.4.0 - Unauthenticated Arbitrary File Upload via 'resumableFilename' Parameter | |
| Weaknesses | CWE-434 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-08-17T16:07:38.949Z
Reserved: 2026-07-16T15:02:34.752Z
Link: CVE-2026-15965
Updated: 2026-08-17T15:14:02.727Z
Status : Received
Published: 2026-08-15T03:16:48.077
Modified: 2026-08-17T16:16:50.360
Link: CVE-2026-15965
No data.
OpenCVE Enrichment
Updated: 2026-08-17T10:59:47Z