What’s Vulnerable › Vulnerabilities

CVE-2026-107765: Discussion Board <= 2.6.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via User Profile Website (user_url) Field

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-31 · updated 2026-11-01
• Weakness: CWE-79

Description

The Discussion Board – WordPress Forum Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.0 via the user profile Website (user_url) field. This is due to insufficient output escaping in the ctdb_filter_comment_author_name() callback hooked to get_comment_author_link, which interpolates the raw user_url value into a single-quoted href attribute without esc_url() or esc_attr(). This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a Discussion Board topic containing the attacker's reply.

Affected products

• marketingfire Discussion Board – WordPress Forum Plugin: through 2.6.0

References

• https://plugins.trac.wordpress.org/browser/wp-discussion-board/tags/2.6.0/includes/functions/functions-skins.php#L43
• https://plugins.trac.wordpress.org/browser/wp-discussion-board/tags/2.6.0/includes/functions/functions-user.php#L83
• https://plugins.trac.wordpress.org/browser/wp-discussion-board/tags/2.6.0/includes/functions/functions-user.php#L92
• https://plugins.trac.wordpress.org/changeset/3761217/wp-discussion-board/trunk/includes/functions/functions-user.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5dbb177e-3cf8-48fe-9660-999c177cbeb5?source=cve

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