Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-2354

8.8 · HIGH

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, an…

Published Jul 11, 2026CWE-434EPSS 1.00%

Overview

CVE-2026-2354 is a high-severity vulnerability. It was published on July 11, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/swiss-toolkit-for-wp/tags/1.4.2/includes/plugins/class-boomdevs-swiss-toolkit-extension-supports.php#L49Refplugins.trac.wordpress.org/browser/swiss-toolkit-for-wp/tags/1.4.2/includes/plugins/class-boomdevs-swiss-toolkit-extension-supports.php#L95Refplugins.trac.wordpress.org/browser/swiss-toolkit-for-wp/trunk/includes/plugins/class-boomdevs-swiss-toolkit-extension-supports.php#L49Refplugins.trac.wordpress.org/browser/swiss-toolkit-for-wp/trunk/includes/plugins/class-boomdevs-swiss-toolkit-extension-supports.php#L95Refwww.wordfence.com/threat-intel/vulnerabilities/id/06bccd2e-6891-433a-9f5b-3ec0c30afef4?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-2354?

CVE-2026-2354 is a high-severity vulnerability. It was published on July 11, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-2354?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-2354?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-2354?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-2354 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999