CVE-2026-6443
Essentialplugin Plugins (Various Versions) - Injected Backdoor
- State
- Published
- Severity
- 9.8 Critical
- Published
- Apr 17, 2026
- Updated
- Apr 21, 2026
- Reserved
- Apr 16, 2026
Description
All plugins by Essentialplugin for WordPress are vulnerable to an injected backdoor in various versions. This is due to the plugin being sold to a malicious threat actor that embedded a backdoor in all of the plugin's they acquired. This makes it possible for the threat actor to maintain a persistent backdoor and inject spam into the affected sites.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Wordfence |
Weaknesses
- CWE-506 Embedded Malicious Code
Affected Products
| Product | Versions |
|---|---|
Accordion and Accordion Slideressentialplugin |
|
Portfolio and Projectsessentialplugin |
|
Featured Post Creativeessentialplugin |
|
Post grid and filter ultimateessentialplugin |
|
WP Featured Content and Slideressentialplugin |
|
Post Ticker Ultimateessentialplugin |
|
Trending/Popular Post Slider and Widgetessentialplugin |
|
Meta Slider and Carousel with Lightboxessentialplugin |
|
Album and Image Gallery Plus Lightboxessentialplugin |
|
Timeline and History slideressentialplugin |
|
WP Blog and Widgetsessentialplugin |
|
Countdown Timer Ultimateessentialplugin |
|
Blog Designer – Post and Widgetessentialplugin |
|
Team Slider and Team Grid Showcase plus Team Carouselessentialplugin |
|
Video gallery and Playeressentialplugin |
|
Popup Maker and Popup Anything – Popup for opt-ins and Lead Generation Conversionsessentialplugin |
|
Testimonial Grid and Testimonial Slider plus Carousel with Rotator Widgetessentialplugin |
|
WP Responsive Recent Post Slider/Carouselessentialplugin |
|
WP Slick Slider and Image Carouselessentialplugin |
|
WP Logo Showcase Responsive Slider and Carouselessentialplugin |
|
WP responsive FAQ with category pluginessentialplugin |
|
WP News and Scrolling Widgetsessentialplugin |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.