Reported vulnerability

MailerLite - WooCommerce integration <= 3.1.3 - Missing Authorization to Data Deletion

Q: Which versions of MailerLite – WooCommerce integration are affected?

Wordfence lists these affected versions: Start version unspecified, through 3.1.3. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for MailerLite – WooCommerce integration?

Wordfence reports a fix for this issue in MailerLite – WooCommerce integration. It lists these fixed versions: 3.1.4. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 15 Dec 2025

Updated 16 Jan 2026

CVE-2026-1000

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

medium · CVSS 6.5

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.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

MailerLite – WooCommerce integration

Software: plugin · woo-mailerlite
Affected versions: Start version unspecified, through 3.1.3
Fix availability: Fix available
Fixed versions: 3.1.4

Recommended action

Update to version 3.1.4, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/e20deec4-f40c-4bd3-91f7-6a9d643a5520?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of MailerLite – WooCommerce integration are affected?

Wordfence lists these affected versions: Start version unspecified, through 3.1.3. Use the version checker above to compare your installed release with this report.

Is a fix available for MailerLite – WooCommerce integration?

Wordfence reports a fix for this issue in MailerLite – WooCommerce integration. It lists these fixed versions: 3.1.4. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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