Essentialplugin Plugins (Various Versions) - Injected Backdoor
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Accordion and Accordion Slider | = 1.4.6 | 1.4.6.1 |
| WordPress plugin | Album and Image Gallery Plus Lightbox | = 2.1.8 | 2.1.8.1 |
| WordPress plugin | Blog Designer – Post and Widget | = 2.7.7 | 2.7.7.1 |
| WordPress plugin | Countdown Timer Ultimate | = 2.6.9 | 2.6.9.1 |
| WordPress plugin | Featured Post Creative | = 1.5.7 | 1.5.7.1 |
| WordPress plugin | Video gallery and Player | = 2.8.7 | 2.8.7.1 |
| WordPress plugin | Meta Slider and Carousel with Lightbox | = 2.0.8 | 2.0.8.1 |
| WordPress plugin | Popup Maker and Popup Anything – Popup for opt-ins and Lead Generation Conversions | = 2.9.1 | 2.9.1.1 |
| WordPress plugin | Portfolio and Projects | = 1.5.6 | 1.5.6.1 |
| WordPress plugin | Post grid and filter ultimate | = 1.7.4 | 1.7.4.1 |
| WordPress plugin | WP responsive FAQ with category plugin | = 3.9.5 | 3.9.5.1 |
| WordPress plugin | WP News and Scrolling Widgets | = 5.0.6 | 5.0.6.1 |
| WordPress plugin | Post Ticker Ultimate | = 1.7.6 | 1.7.6.1 |
| WordPress plugin | Timeline and History slider | = 2.4.5 | 2.4.5.1 |
| WordPress plugin | WP Blog and Widgets | = 2.6.6 | 2.6.6.1 |
| WordPress plugin | WP Featured Content and Slider | = 1.7.6 | 1.7.6.1 |
| WordPress plugin | WP Logo Showcase Responsive Slider and Carousel | = 3.8.7 | 3.8.7.1 |
| WordPress plugin | WP Responsive Recent Post Slider/Carousel | = 3.7.1 | 3.7.1.1 |
| WordPress plugin | WP Slick Slider and Image Carousel | = 3.7.8.1 | 3.7.8.2 |
| WordPress plugin | Team Slider and Team Grid Showcase plus Team Carousel | = 2.8.6 | 2.8.6.1 |
| WordPress plugin | Testimonial Grid and Testimonial Slider plus Carousel with Rotator Widget | = 3.5.6 | 3.5.6.1 |
| WordPress plugin | Trending/Popular Post Slider and Widget | = 1.8.6 | 1.8.6.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-506- Platform
- WordPress
- Package
Accordion and Accordion Slider, Album and Image Gallery Plus Lightbox, Blog Designer – Post and Widget- Disclosed
- 09.04.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 2597724a-9a39-4e46-b153-f42366f833ba - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
This record contains material that is subject to copyright
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
https://www.cve.org/Legal/TermsOfUseCopyright 2012-2026 Defiant Inc.
Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.
https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/Wordfence Intelligence
Wordfence Intelligence - Defiant, Inc. Copyright Defiant, Inc. All rights reserved except as granted below. License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026): Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy. Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Vulnerability history: Meta Slider and Carousel with Lightbox
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 02.2023 04.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- Medium 3
Disclosures per year
- 2023: 2
- 2024: 1
- 2025: 0
- 2026: 1
-
Essentialplugin Plugins (Various Versions) - Injected Backdoor this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.