PT-2026-43527 · Bit Form · Bitform – Data Management Solution For Wordpress

Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-8891

NVD

CVSS v3.1

6.4

Medium

Base vector

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

The BitForm plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bitform' shortcode in versions up to, and including, 1.1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('width' and 'height') in the Shortcode::shortcode() function, which are interpolated directly into the 'style' attribute of an element. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-8891

Affected Products

Bitform – Data Management Solution For Wordpress

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-8891 · Security Note
• https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/Common/Shortcode.php#L13 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/71167dec-38ec-4eb3-8fab-25eca0f8b071?source=cve · Note
• https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/index.php#L54 · Note
• https://plugins.trac.wordpress.org/browser/bitform/tags/1.1.0/Common/Shortcode.php#L17 · Note