# CVE-2026-6443

> Vulnerability · severity: **CRITICAL** (CVSS 9.8).

## 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.

## Key facts

- **CVE ID:** CVE-2026-6443
- **Published:** 2026-04-17
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.8
- **CWE codes:** CWE-506

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6443

## Citation

> AI Analytics. CVE-2026-6443. Retrieved 2026-07-18 from https://api.ai-analytics.org/cve/CVE-2026-6443. Derived from NIST NVD. Licensed CC0.

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