PLUGIN SECURITY
Is MailerLite - Signup forms (official) safe?
Add newsletter signup forms to your WordPress site. Subscribers will be saved directly to your MailerLite account. Super easy to set up!
What this plugin does
- Slug:
official-mailerlite-sign-up-forms - Author: MailerLite
- 100000+ active installs
- 60/100 rating (40 reviews on wordpress.org)
- 2503211 all-time downloads
- On WordPress.org since 2014-08-03
formmailerlitenewslettersubscribewebform
Maintenance status
- Latest known version: 1.7.26
- Last updated: 2026-06-26 10:23am GMT
- Tested up to WordPress: 6.8.11
- Requires PHP: 7.2.5+
- Max supported PHP (analyzed): 8.4
Known vulnerabilities
7 known CVEs on file for MailerLite - Signup forms (official). Reported between 2020 and 2026.
| CVE | Vulnerability | Type | Severity | Affected | Fixed in | Published | Status |
|---|---|---|---|---|---|---|---|
| CVE-2026-25420 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.7.19 | Missing Authorization | Medium 4.3 | < 1.7.19 | 1.7.19 | 2026-01-28 | ✓ fixed in latest |
| CVE-2026-3253 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.7.22 | Missing Authorization | Medium 4.3 | < 1.7.22 | 1.7.22 | 2026-01-28 | ✓ fixed in latest |
| CVE-2025-13993 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.7.17 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 5.5 | < 1.7.17 | 1.7.17 | 2025-12-11 | ✓ fixed in latest |
| CVE-2024-2797 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.7.7 | Missing Authorization | Medium 5.3 | < 1.7.7 | 1.7.7 | 2024-04-29 | ✓ fixed in latest |
| CVE-2024-1386 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.7.7 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.4 | < 1.7.7 | 1.7.7 | 2024-04-29 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.5 | — | Unknown | < 1.4.5 | 1.4.5 | 2023-05-25 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.4 | — | Unknown | < 1.4.4 | 1.4.4 | 2023-05-25 | ✓ fixed in latest |
| CVE-2022-33201 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.5.8 | Cross-Site Request Forgery (CSRF) | Medium 6.3 | < 1.5.8 | 1.5.8 | 2022-08-01 | ✓ fixed in latest |
+ 9 more known vulnerabilities
| CVE | Vulnerability | Type | Severity | Affected | Fixed in | Published | Status |
|---|---|---|---|---|---|---|---|
| CVE-2022-1604 | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.5.4 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | Medium 6.1 | < 1.5.4 | 1.5.4 | 2022-05-18 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.4 | — | Unknown | < 1.4.4 | 1.4.4 | 2020-05-25 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.5 | — | Unknown | < 1.4.5 | 1.4.5 | 2020-05-25 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.4 | — | Unknown | < 1.4.4 | 1.4.4 | 2020-05-22 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.5 | — | Unknown | < 1.4.5 | 1.4.5 | 2020-05-22 | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.4 | — | Unknown | < 1.4.4 | 1.4.4 | — | ✓ fixed in latest |
| — | MailerLite – Signup forms (official) [official-mailerlite-sign-up-forms] < 1.4.5 | — | Unknown | < 1.4.5 | 1.4.5 | — | ✓ fixed in latest |
| — | Official MailerLite Sign Up Forms < 1.4.4 - Unauthenticated SQL Injection | — | Unknown | < 1.4.4 | 1.4.4 | — | ✓ fixed in latest |
| — | Official MailerLite Sign Up Forms < 1.4.5 - Multiple CSRF Issues | — | Unknown | < 1.4.5 | 1.4.5 | — | ✓ fixed in latest |
How to fix it
Keep MailerLite - Signup forms (official) updated — 1.7.26 is the latest version on wordpress.org, and each CVE above lists the exact release that fixed it ("Fixed in").
This is the plugin's full known vulnerability history, not a scan of any specific installation — run a free scan of your own site to check your exact installed version.
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Check your own WordPress site
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