WP CTA <= 2.2.2 - Unauthenticated Time-Based Blind SQL Injection via 'fildname' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- SQL injection
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.
Summary
The WP CTA – Sticky CTA Builder, Generate Leads, Promote Sales plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'fildname' parameter in all versions up to, and including, 2.2.2. This is due to insufficient escaping of user-supplied column names in the ajaxCheck() method and lack of preparation in the $wpdb->update() call. The vulnerability is compounded by the complete absence of authorization checks and the endpoint being registered for unauthenticated users via wp_ajax_nopriv_. This makes it possible for unauthenticated attackers to inject arbitrary SQL queries and extract sensitive information from the database via time-based blind SQL injection techniques, including administrator password hashes.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| blendmedia | WP CTA – Call Now Button, Sticky Button & Call to Action Builder | up to 2.2.2 | — | No fix listed | CNA |
- WP CTA – Call Now Button, Sticky Button & Call to Action Builder Vendorblendmedia Affected up to 2.2.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4661
- 2026-10-03 Alias added: GHSA-w7rc-p2m9-r4pm
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7e963601-dc41-4218-9119-708c74e51bc2?source=cve
- https://plugins.trac.wordpress.org/browser/easy-sticky-sidebar/tags/1.7.4/inc/ClassActions.php#L193
- https://plugins.trac.wordpress.org/browser/easy-sticky-sidebar/tags/1.7.4/inc/ClassActions.php#L186
- https://plugins.trac.wordpress.org/browser/easy-sticky-sidebar/tags/1.7.4/inc/ClassActions.php#L17
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3524743%40easy-sticky-sidebar&new=3524743%40easy-sticky-sidebar
More blendmedia vulnerabilities
- TI-2026-18040 WordPress WordPress CTA plugin <= 2.1.2 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2025-07457 Missing authorization in blendmedia WP CTA – Call Now Button, Sticky Button & Call to… CVSS 3.1MEDIUM 5.3
- TI-2026-05337 WP CTA <= 2.1.2 - Authenticated (Administrator+) Server-Side Request Forgery CVSS 3.1MEDIUM 4.9
- TI-2025-33237 WordPress CTA plugin <= 1.7.0 - Cross Site Request Forgery (CSRF) Vulnerability CVSS 3.1MEDIUM 4.3
Sources
- CVE-2026-4661 · CVE Program
- CVE-2026-4661 · NVD
- FIRST EPSS
- GHSA-w7rc-p2m9-r4pm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences