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MailerPress vulnerabilities
MailerPress has 3 known vulnerabilities in this database. The most recent published record is dated 31 Jul 2026.
- Known vulnerabilities
- 3
- Active installs
- 1,000+
- Latest version
- 2.1
- Last updated
- 1 Oct 2026
- Most recent
- 31 Jul 2026
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Broken access control CVE-2026-18436 | Medium 5.3 | Up to 1.5.0 | Fixed in a later version (latest 2.1) | 31 Jul 2026 |
| Broken access control CVE-2026-18437 | Medium 5.3 | Up to 1.5.0 | Fixed in a later version (latest 2.1) | 31 Jul 2026 |
| Cross-site scripting (XSS) CVE-2026-8599 | Medium 6.4 | Up to 2.0.4 | Fixed in a later version (latest 2.1) | 9 Jun 2026 |
Read the published descriptions
- CVE-2026-18436, 31 Jul 2026
- 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 route in the vulnerable range was registered without a permissionCallback, allowing the restoreRevision() handler to run for unauthenticated requests and overwrite a campaign's content_html with any prior revision. This makes it possible for unauthenticated attackers to modify campaign content by restoring an arbitrary revision. CVE record
- CVE-2026-18437, 31 Jul 2026
- The MailerPress - Newsletter, email marketing & AI automation plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the `mailerpress/v1/contact` endpoint in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to update contact details. CVE record
- CVE-2026-8599, 9 Jun 2026
- The MailerPress - Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Campaign HTML Content Field in all versions up to, and including, 2.0.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The public-facing campaign preview endpoint (/mp-email/{id}-slug/) is not affected by this vulnerability, as it applies a Content-Security-Policy header blocking all inline scripts; exploitation is limited to the admin dashboard preview. CVE record
What to do if you run MailerPress
If you run MailerPress, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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