CVE-2026-6443
Critical · 9.8CVSS
9.8
EPSS
0.6%
Published
Apr 17, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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