Arbitrary file upload in Wpmessiah Swiss Toolkit For Wp

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_…

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-2354?
CVE-2026-2354 is a high-severity vulnerability in Wpmessiah Swiss Toolkit For Wp, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-07-11.
How severe is CVE-2026-2354?
High severity. CVSS v3 base score is 8.8 out of 10.