What is CVE-2026-5306?

CVE-2026-5306 is a medium-severity vulnerability in Check & Log Email, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 5.4/10. Published 2026-04-28.

How severe is CVE-2026-5306?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Check & Log Email

CVE-2026-5306

The Check & Log Email WordPress plugin before 2.0.13 does not properly handle email replacement, which could allow unauthenticated users to perform Stored XSS attacks when the email encoder setting is enabled

EPSS: 0.001 (23.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Unknown Check & Log Email — versions 0

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-5306?: CVE-2026-5306 is a medium-severity vulnerability in Check & Log Email, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 5.4/10. Published 2026-04-28.
How severe is CVE-2026-5306?: Medium severity. CVSS v3 base score is 5.4 out of 10.