CVE-2026-6443

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 v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://anchor.host/someone-bought-30-wordpress-plugins-and-planted-a-backdoor-in-all-of-them/
https://www.wordfence.com/threat-intel/vulnerabilities/id/2597724a-9a39-4e46-b153-f42366f833ba?source=cve

Configurations

No configuration.

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Todos los plugins de Essentialplugin para WordPress son vulnerables a una puerta trasera inyectada en varias versiones. Esto se debe a que el plugin fue vendido a un actor de amenazas malicioso que incrustó una puerta trasera en todos los plugins que adquirió. Esto hace posible que el actor de amenazas mantenga una puerta trasera persistente e inyecte correo no deseado en los sitios afectados.

Information

Published : 2026-04-17 07:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-6443

Mitre link : CVE-2026-6443

CVE.ORG link : CVE-2026-6443

JSON object : View

Products Affected

No product.

CWE

CWE-506

Embedded Malicious Code

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"affected", "version": "1.4.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Portfolio and Projects", "versions": [{"status": "affected", "version": "1.5.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Featured Post Creative", "versions": [{"status": "affected", "version": "1.5.7"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Post grid and filter ultimate", "versions": [{"status": "affected", "version": "1.7.4"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP Featured Content and Slider", "versions": [{"status": "affected", "version": "1.7.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Post Ticker Ultimate", "versions": [{"status": "affected", "version": "1.7.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Trending/Popular Post Slider and Widget", "versions": [{"status": "affected", "version": "1.8.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Meta Slider and Carousel with Lightbox", "versions": [{"status": "affected", "version": "2.0.8"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Album and Image Gallery Plus Lightbox", "versions": [{"status": "affected", "version": "2.1.8"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Timeline and History slider", "versions": [{"status": "affected", "version": "2.4.5"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP Blog and Widgets", "versions": [{"status": "affected", "version": "2.6.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Countdown Timer Ultimate", "versions": [{"status": "affected", "version": "2.6.9"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Blog Designer \u2013 Post and Widget", "versions": [{"status": "affected", "version": "2.7.7"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Team Slider and Team Grid Showcase plus Team Carousel", "versions": [{"status": "affected", "version": "2.8.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Video gallery and Player", "versions": [{"status": "affected", "version": "2.8.7"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Popup Maker and Popup Anything \u2013 Popup for opt-ins and Lead Generation Conversions", "versions": [{"status": "affected", "version": "2.9.1"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "Testimonial Grid and Testimonial Slider plus Carousel with Rotator Widget", "versions": [{"status": "affected", "version": "3.5.6"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP Responsive Recent Post Slider/Carousel", "versions": [{"status": "affected", "version": "3.7.1"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP Slick Slider and Image Carousel", "versions": [{"status": "affected", "version": "3.7.8.1"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP Logo Showcase Responsive Slider and Carousel", "versions": [{"status": "affected", "version": "3.8.7"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP responsive FAQ with category plugin", "versions": [{"status": "affected", "version": "3.9.5"}], "defaultStatus": "unaffected"}, {"vendor": "essentialplugin", "product": "WP News and Scrolling Widgets", "versions": [{"status": "affected", "version": "5.0.6"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-17T07:16:03.160", "references": [{"url": "https://anchor.host/someone-bought-30-wordpress-plugins-and-planted-a-backdoor-in-all-of-them/", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2597724a-9a39-4e46-b153-f42366f833ba?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-506"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Todos los plugins de Essentialplugin para WordPress son vulnerables a una puerta trasera inyectada en varias versiones. Esto se debe a que el plugin fue vendido a un actor de amenazas malicioso que incrust\u00f3 una puerta trasera en todos los plugins que adquiri\u00f3. Esto hace posible que el actor de amenazas mantenga una puerta trasera persistente e inyecte correo no deseado en los sitios afectados."}], "lastModified": "2026-10-26T21:10:00.170", "sourceIdentifier": "security@wordfence.com"}