PT-2026-33416 · Essentialplugin · Accordion/Accordion Slider

Damien · Published 2026-04-17 · Updated 2026-04-17 · CVE-2026-6443

Mitre

CVSS v3.1

9.8

Critical

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The Accordion and Accordion Slider plugin for WordPress is vulnerable to an injected backdoor in version 1.4.6. 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.

Fix

RCE

Weakness Enumeration

CWE-506

Related Identifiers

CVE-2026-6443

Affected Products

Accordion/Accordion Slider

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-6443 · Security Note
• https://twitter.com/OrizonCyber/status/2045042125004321175 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/2597724a-9a39-4e46-b153-f42366f833ba?source=cve · Note
• https://twitter.com/VulmonFeeds/status/2045050677311766568 · Twitter Post
• https://twitter.com/ctiwatchcloud/status/2045110048632823971 · Twitter Post
• https://twitter.com/CVEnew/status/2045102602698760389 · Twitter Post
• https://twitter.com/0dayPublishing/status/2045033191719780565 · Twitter Post
• https://anchor.host/someone-bought-30-wordpress-plugins-and-planted-a-backdoor-in-all-of-them · Note