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wordfence / plugin · official-mailerlite-sign-up-forms
MailerLite – Signup forms (official)
official-mailerlite-sign-up-forms
total installs
100,000
total vulns
2
critical
0
high
0
medium
2
low
0
latest vuln
—
patched
2
unpatched
0
avg time to patch
—
vulnerabilities
(2)
MailerLite – Signup forms (official) <= 1.7.18 - Missing Authorization
medium
✓ patched
The MailerLite – Signup forms (official) plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 1.7.18. This makes it possible for authenticated attackers, with Contributor-level access and above, to perform an unauthorized action.
MailerLite – Signup forms (official) <= 1.7.16 - Authenticated (Administrator+) Stored Cross-Site Scripting
medium
✓ patched
cve id
CVE-2025-13993 ↗
cvss score
5.5
cwe
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
published
Dec 11, 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.