What’s Vulnerable › Vulnerabilities

CVE-2026-3657: My Sticky Bar <= 2.8.6 - Unauthenticated SQL Injection via 'stickymenu_contact_lead_form' Action

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-12 · updated 2026-06-17
• Weakness: CWE-89

Description

The My Sticky Bar plugin for WordPress is vulnerable to SQL injection via the `stickymenu_contact_lead_form` AJAX action in all versions up to, and including, 2.8.6. This is due to the handler using attacker-controlled POST parameter names directly as SQL column identifiers in `$wpdb->insert()`. While parameter values are sanitized with `esc_sql()` and `sanitize_text_field()`, the parameter keys are used as-is to build the column list in the INSERT statement. This makes it possible for unauthenticated attackers to inject SQL via crafted parameter names, enabling blind time-based data extraction from the database.

Affected products

• Floating Notification Bar, Sticky Menu on Scroll, Announcement Banner, and Sticky Header for Any Theme: through 2.8.6

References

• https://plugins.trac.wordpress.org/browser/mystickymenu/tags/2.8.6/mystickymenu.php#L2001
• https://plugins.trac.wordpress.org/browser/mystickymenu/tags/2.8.6/mystickymenu.php#L2386
• https://plugins.trac.wordpress.org/browser/mystickymenu/tags/2.8.6/mystickymenu.php#L2396
• https://plugins.trac.wordpress.org/browser/mystickymenu/trunk/mystickymenu.php#L2386
• https://plugins.trac.wordpress.org/changeset?old_path=/mystickymenu/tags/2.8.6&new_path=/mystickymenu/tags/2.8.7
• https://www.wordfence.com/threat-intel/vulnerabilities/id/05d633f5-151a-4462-a6a0-5a638d7c3404?source=cve

Get alerted when CVE-2026-3657 or the next vulnerability affects your stack