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Critical 9.8Published Apr 17, 2026
CVE-2026-6443Essentialplugin Plugins (Various Versions) - Injected Backdoor
Updated under an hour ago ()
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It affects essentialplugin Accordion and Accordion Slider and 21 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-506
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Apr 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
essentialplugin Accordion and Accordion Slider essentialplugin:accordion_and_accordion_slider (from the name) | 1.4.6 | CNA record |
essentialplugin Portfolio and Projects essentialplugin:portfolio_and_projects (from the name) | 1.5.6 | CNA record |
essentialplugin Featured Post Creative essentialplugin:featured_post_creative (from the name) | 1.5.7 | CNA record |
essentialplugin Post grid and filter ultimate essentialplugin:post_grid_and_filter_ultimate (from the name) | 1.7.4 | CNA record |
essentialplugin WP Featured Content and Slider essentialplugin:wp_featured_content_and_slider (from the name) | 1.7.6 | CNA record |
essentialplugin Post Ticker Ultimate essentialplugin:post_ticker_ultimate (from the name) | 1.7.6 | CNA record |
essentialplugin Trending/Popular Post Slider and Widget essentialplugin:trending_popular_post_slider_and_widget (from the name) | 1.8.6 | CNA record |
essentialplugin Meta Slider and Carousel with Lightbox essentialplugin:meta_slider_and_carousel_with_lightbox (from the name) | 2.0.8 | CNA record |
essentialplugin Album and Image Gallery Plus Lightbox essentialplugin:album_and_image_gallery_plus_lightbox (from the name) | 2.1.8 | CNA record |
essentialplugin Timeline and History slider essentialplugin:timeline_and_history_slider (from the name) | 2.4.5 | CNA record |
essentialplugin WP Blog and Widgets essentialplugin:wp_blog_and_widgets (from the name) | 2.6.6 | CNA record |
essentialplugin Countdown Timer Ultimate essentialplugin:countdown_timer_ultimate (from the name) | 2.6.9 | CNA record |
essentialplugin Blog Designer – Post and Widget essentialplugin:blog_designer_post_and_widget (from the name) | 2.7.7 | CNA record |
essentialplugin Team Slider and Team Grid Showcase plus Team Carousel essentialplugin:team_slider_and_team_grid_showcase_plus_team_carousel (from the name) | 2.8.6 | CNA record |
essentialplugin Video gallery and Player essentialplugin:video_gallery_and_player (from the name) | 2.8.7 | CNA record |
essentialplugin Popup Maker and Popup Anything – Popup for opt-ins and Lead Generation Conversions essentialplugin:popup_maker_and_popup_anything_popup_for_opt_ins_and_lead_generation_conversions (from the name) | 2.9.1 | CNA record |
essentialplugin Testimonial Grid and Testimonial Slider plus Carousel with Rotator Widget essentialplugin:testimonial_grid_and_testimonial_slider_plus_carousel_with_rotator_widget (from the name) | 3.5.6 | CNA record |
essentialplugin WP Responsive Recent Post Slider/Carousel essentialplugin:wp_responsive_recent_post_slider_carousel (from the name) | 3.7.1 | CNA record |
essentialplugin WP Slick Slider and Image Carousel essentialplugin:wp_slick_slider_and_image_carousel (from the name) | 3.7.8.1 | CNA record |
essentialplugin WP Logo Showcase Responsive Slider and Carousel essentialplugin:wp_logo_showcase_responsive_slider_and_carousel (from the name) | 3.8.7 | CNA record |
essentialplugin WP responsive FAQ with category plugin essentialplugin:wp_responsive_faq_with_category_plugin (from the name) | 3.9.5 | CNA record |
essentialplugin WP News and Scrolling Widgets essentialplugin:wp_news_and_scrolling_widgets (from the name) | 5.0.6 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2597724a-9a39-4e46-b153-f42366f833ba?source=cve
- https://anchor.host/someone-bought-30-wordpress-plugins-and-planted-a-backdoor-in-all-of-them/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.