CVE-2026-2354

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.
Configurations

No configuration.

History

No history.

Information

Published : 2026-07-11 05:16

Updated : 2026-07-13 16:59


NVD link : CVE-2026-2354

Mitre link : CVE-2026-2354

CVE.ORG link : CVE-2026-2354


JSON object : View

Products Affected

No product.

CWE
CWE-434

Unrestricted Upload of File with Dangerous Type