HomeWordPress vulnerabilitiesMailerLite
MailerLite vulnerabilities
MailerLite has 6 known vulnerabilities in this database. The most recent published record is dated 24 Sep 2026.
- Known vulnerabilities
- 6
- Active installs
- 100,000+
- Latest version
- 1.7.26
- Last updated
- 26 Jun 2026
- Most recent
- 24 Sep 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-2026-3253 | Medium 4.3 | Up to 1.7.21 | Fixed in a later version (latest 1.7.26) | 13 d ago |
| Cross-site scripting (XSS) CVE-2025-13993 | Medium 5.5 | Up to 1.7.16 | Fixed in a later version (latest 1.7.26) | 12 Dec 2025 |
| Broken access control CVE-2024-2797 | Medium 5.3 | Up to 1.7.6 | Fixed in a later version (latest 1.7.26) | 2 May 2024 |
| Cross-site scripting (XSS) CVE-2024-1386 | Medium 6.4 | Not yet published | Check for an update | 2 May 2024 |
| Cross-site request forgery (CSRF) CVE-2022-33201 | Medium 6.3 | Before 1.5.8 | Fixed in 1.5.8 | 5 Aug 2022 |
| Cross-site scripting (XSS) CVE-2022-1604 | Medium 6.1 | Before 1.5.4 | Fixed in 1.5.4 | 13 Jun 2022 |
Read the published descriptions
- CVE-2026-3253, 24 Sep 2026
- The MailerLite - Signup forms (official) plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the forms() method of the AdminController class in all versions up to, and including, 1.7.21. This makes it possible for authenticated attackers, with Contributor-level access and above, to create or delete arbitrary signup forms. CVE record
- CVE-2025-13993, 12 Dec 2025
- The MailerLite - Signup forms (official) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'form_description' and 'success_message' parameters in versions up to, and including, 1.7.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator access or higher, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. CVE record
- CVE-2024-2797, 2 May 2024
- The MailerLite - Signup forms (official) plugin for WordPress is vulnerable to unauthorized plugin setting changes due to a missing capability check on the toggleRolesAndPermissions and editAllowedRolesAndPermissions functions in all versions up to, and including, 1.7.6. This makes it possible for unauthenticated attackers to allow lower level users to modify forms. CVE record
- CVE-2024-1386, 2 May 2024
- The MailerLite - Signup forms (official) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in versions 1.5.0 to 1.7.6 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. CVE record
- CVE-2022-33201, 5 Aug 2022
- Cross-Site Request Forgery (CSRF) vulnerability in MailerLite - Signup forms (official) plugin <= 1.5.7 at WordPress allows an attacker to change the API key. CVE record
- CVE-2022-1604, 13 Jun 2022
- The MailerLite WordPress plugin before 1.5.4 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting 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.
Email me about new MailerLite vulnerabilities
Free. We email you when a new vulnerability is published for MailerLite, usually within minutes. Confirm by email; unsubscribe any time.
Focus on your business. We’ll take care of your website.
From everyday updates to ongoing care, we keep your website working.