CVE-2026-8853
MediumCVSS 4.4Exploitation Probability (EPSS)
Low risk10th percentile — higher than 10% of all known CVEs
Summary
The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the 'memo' parameter in all versions up to and including 5.1.3 due to insufficient input sanitization and output escaping. This allows authenticated attackers with editor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Risk Assessment
Attackers can exploit this vulnerability to inject malicious code, potentially leading to user data theft or account takeover. This poses a serious threat to the security of the site and its users.
Recommendation
It is recommended to update the MW WP Form plugin to the latest version to mitigate this vulnerability. Additionally, conducting a security audit of the site to identify potential threats is advisable.
Original NVD description (English source)
The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because the memo value is stored via update_post_meta() rather than wp_insert_post(), WordPress's built-in kses and unfiltered_html protections do not apply, allowing attackers to break out of the textarea element via injected closing tags regardless of role-based content filtering.