What’s Vulnerable › Vulnerabilities
CVE-2026-93747: wpForo Forum <= 3.1.6 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'telegram' Profile 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: 2026-09-25 · updated 2026-09-25
- Weakness: CWE-79
Description
The wpForo Forum plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'telegram' profile field in versions up to, and including, 3.1.6. This is due to insufficient input sanitization and output escaping in the profile_update action — the raw $_POST['data'] array is copied into a $custom_fields variable before validate() and sanitize() run, both of which operate only on a parallel $user reference, leaving $custom_fields unsanitized when it is persisted via update_custom_fields(); on render, wpforo_decode() reverses the entity encoding and the value is echoed without escaping in field_wrap_profile(). 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 an injected page.
Affected products
- tomdever wpForo Forum: through 3.1.6
References
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L711
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php#L1074
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php#L324
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L1157
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L906
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3706608%40wpforo&new=3706608%40wpforo
- https://www.wordfence.com/threat-intel/vulnerabilities/id/15dc1661-793a-43dd-8a12-8f51da6cb304?source=cve
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