CVE-2026-6443
Essentialplugin Plugins (Various Versions) - Injected Backdoor
9.8CVSSCRITICAL
Description
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 Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
and 17 more affected products View all →
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
Timeline
Published
Apr 17, 2026
Last Updated
Apr 22, 2026
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