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MailerLite vulnerabilities
MailerLite has 1 known vulnerability in this database. The most recent published record is dated 16 Jan 2026.
- Known vulnerabilities
- 1
- Active installs
- 30,000+
- Latest version
- 3.1.26
- Last updated
- 1 Sep 2026
- Most recent
- 16 Jan 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-2026-1000 | Medium 6.5 | Up to 3.1.3 | Fixed in a later version (latest 3.1.26) | 16 Jan 2026 |
Read the published descriptions
- CVE-2026-1000, 16 Jan 2026
- The MailerLite - WooCommerce integration plugin for WordPress is vulnerable to unauthorized data modification and deletion in all versions up to, and including, 3.1.3. This is due to missing capability checks on the resetIntegration() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to reset the plugin's integration settings, delete all plugin options, and drop the plugin's database tables (woo_mailerlite_carts and woo_mailerlite_jobs), resulting in complete loss of plugin data including customer abandoned cart information and sync job history. CVE record
What to do if you run MailerLite
If you run MailerLite, 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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