CVE-2026-3253: medium-severity vulnerability in MailerLite – Signup forms (official)
MailerLite – Signup forms (official) <= 1.7.21 - Missing Authorization to Authenticated (Contributor+) Form Creation and Deletion
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.3epss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected products
mailerlite · MailerLite – Signup forms (official)Related CVEs — MailerLite – Signup forms (official)
In the same product, most dangerous first.