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Vulnerabilities

Vulnerability · CVE-2026-6443

All plugins by Essentialplugin for WordPress are vulnerable to an injected backdoor in various versions.

Published Apr 17, 2026 · catalog updated Jun 17, 2026 · All plugins by Essentialplugin

Check if you run it

No confirmed exploitation is on record for CVE-2026-6443. EPSS is 0.65%. Act only if a listed version of All plugins by Essentialplugin is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (All plugins by Essentialplugin).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.65%
Remediation
Not established
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-6443

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-6443. EPSS is 0.65%. Act only if a listed version of All plugins by Essentialplugin is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-506. EPSS 0.65%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 17, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-6443

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-6443

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.