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 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-26)

CWE

CWE-506

Published

2026-04-17

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

• 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

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