PT-2026-26804 · WordPress · Mandatory Field

Bhumividh Treloges · Published 2026-03-21 · Updated 2026-03-21 · CVE-2026-1278

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Mandatory Field plugin for WordPress versions prior to 1.6.9

Description The Mandatory Field plugin for WordPress is susceptible to Stored Cross-Site Scripting through admin settings. Insufficient input sanitization and output escaping allows authenticated attackers with administrator-level permissions or higher to inject arbitrary web scripts into pages. These scripts execute when a user accesses the injected page. This issue specifically impacts multi-site installations and those where unfiltered html has been disabled.

Recommendations Update the Mandatory Field plugin to version 1.6.9 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-1278

Affected Products

Mandatory Field

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-1278 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/e262ec15-420a-4f52-90e0-e4a2e28402a1?source=cve · Note
• https://plugins.trac.wordpress.org/browser/mandatory-fields/tags/1.6.8/mandatory-plugin-option-page.php#L14 · Note
• https://twitter.com/CVEnew/status/2035237233008287770 · Twitter Post
• https://wordpress.org/plugins/mandatory-fields · Note
• https://downloads.wordpress.org/plugin/mandatory-fields.1.6.8.zip · Note
• https://plugins.trac.wordpress.org/browser/mandatory-fields/trunk/mandatory-plugin-option-page.php#L14 · Note