What is CVE-2026-18436?

CVE-2026-18436 is a medium-severity vulnerability in Mailerpress – Newsletter, Email Marketing & Ai Automation, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-07-31.

How severe is CVE-2026-18436?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Mailerpress – Newsletter, Email Marketing & Ai Automation

CVE-2026-18436

The MailPress plugin for WordPress is vulnerable to unauthorized access in versions up to, and including, 1.5.0 via the campaign revision-restore REST endpoint (POST /wp-json/mailpress/v1/campaign/<id>/restore-revision/<revision_id>). The…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Mailerpress – Newsletter, Email Marketing & Ai Automation — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security@wordfence.com
security@wordfence.com
security@wordfence.com

Frequently asked questions

What is CVE-2026-18436?: CVE-2026-18436 is a medium-severity vulnerability in Mailerpress – Newsletter, Email Marketing & Ai Automation, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-07-31.
How severe is CVE-2026-18436?: Medium severity. CVSS v3 base score is 5.3 out of 10.