What is CVE-2026-78146?

CVE-2026-78146 is a medium-severity vulnerability in Simple Newsletter Plugin, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-08-26.

How severe is CVE-2026-78146?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Simple Newsletter Plugin

CVE-2026-78146

The Simple Newsletter Plugin WordPress plugin before 4.3.3 does not verify that the requester is the subscriber named in a public request before rendering that subscriber's stored details, allowing unauthenticated users to disclose a subscriber's personal data along with the key that authorises changes to their record.

Vulnerability class: Information Disclosure

EPSS: 0.002 (7.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Unknown Simple Newsletter Plugin

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

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

Frequently asked questions

What is CVE-2026-78146?: CVE-2026-78146 is a medium-severity vulnerability in Simple Newsletter Plugin, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-08-26.
How severe is CVE-2026-78146?: Medium severity. CVSS v3 base score is 6.5 out of 10.