CVE-2026-6443
Published: Apr 17, 2026
Modified: Apr 21, 2026
CVSS v3.1
9.8
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.
| Vendor | Product | Versions |
|---|---|---|
essentialplugin | Accordion and Accordion Slider | affected 1.4.6 |
essentialplugin | Portfolio and Projects | affected 1.5.6 |
essentialplugin | Featured Post Creative | affected 1.5.7 |
essentialplugin | Post grid and filter ultimate | affected 1.7.4 |
essentialplugin | WP Featured Content and Slider | affected 1.7.6 |
essentialplugin | Post Ticker Ultimate | affected 1.7.6 |
essentialplugin | Trending/Popular Post Slider and Widget | affected 1.8.6 |
essentialplugin | Meta Slider and Carousel with Lightbox | affected 2.0.8 |
essentialplugin | Album and Image Gallery Plus Lightbox | affected 2.1.8 |
essentialplugin | Timeline and History slider | affected 2.4.5 |
essentialplugin | WP Blog and Widgets | affected 2.6.6 |
essentialplugin | Countdown Timer Ultimate | affected 2.6.9 |
essentialplugin | Blog Designer – Post and Widget | affected 2.7.7 |
essentialplugin | Team Slider and Team Grid Showcase plus Team Carousel | affected 2.8.6 |
essentialplugin | Video gallery and Player | affected 2.8.7 |
essentialplugin | Popup Maker and Popup Anything – Popup for opt-ins and Lead Generation Conversions | affected 2.9.1 |
essentialplugin | Testimonial Grid and Testimonial Slider plus Carousel with Rotator Widget | affected 3.5.6 |
essentialplugin | WP Responsive Recent Post Slider/Carousel | affected 3.7.1 |
essentialplugin | WP Slick Slider and Image Carousel | affected 3.7.8.1 |
essentialplugin | WP Logo Showcase Responsive Slider and Carousel | affected 3.8.7 |
essentialplugin | WP responsive FAQ with category plugin | affected 3.9.5 |
essentialplugin | WP News and Scrolling Widgets | affected 5.0.6 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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