The Swiss Toolkit For WP plugin for WordPress is vulnerable to arbitrary file upload due to a flawed file type validation bypass in the `upload_extension_files()` function in all versions up to, and including, 1.4.6. The `upload_extension_files()` function hooks into WordPress's `wp_check_filetype_and_ext` filter and uses `strpos()` to check if a filename contains a configured extension string, rather than verifying the actual file extension. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files (including PHP) on the affected site's server which may make remote code execution possible, granted the "Enhanced Multi-Format Image Support" feature is enabled with at least one extension (e.g., avif) in the allowed formats.
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History
Mon, 13 Jul 2026 16:30:00 +0000
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ssvc
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Mon, 13 Jul 2026 15:15:00 +0000
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Wordpress
Wordpress wordpress Wpmessiah Wpmessiah swiss Toolkit For Wp |
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| Vendors & Products |
Wordpress
Wordpress wordpress Wpmessiah Wpmessiah swiss Toolkit For Wp |
Sat, 11 Jul 2026 04:45:00 +0000
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| Description | The Swiss Toolkit For WP plugin for WordPress is vulnerable to arbitrary file upload due to a flawed file type validation bypass in the `upload_extension_files()` function in all versions up to, and including, 1.4.6. The `upload_extension_files()` function hooks into WordPress's `wp_check_filetype_and_ext` filter and uses `strpos()` to check if a filename contains a configured extension string, rather than verifying the actual file extension. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files (including PHP) on the affected site's server which may make remote code execution possible, granted the "Enhanced Multi-Format Image Support" feature is enabled with at least one extension (e.g., avif) in the allowed formats. | |
| Title | Swiss Toolkit For WP <= 1.4.6 - Authenticated (Author+) Arbitrary File Upload via upload_extension_files() | |
| Weaknesses | CWE-434 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-07-13T14:39:51.179Z
Reserved: 2026-02-11T16:47:19.850Z
Link: CVE-2026-2354
Updated: 2026-07-13T14:35:55.309Z
No data.
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OpenCVE Enrichment
Updated: 2026-07-26T12:45:06Z
Weaknesses