CVE-2026-13156

MailerSend - Official SMTP Integration < 1.0.8 - Settings Deletion and Plugin Deactivation via CSRF

Medium · published July 20, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
2.9
In the wild
Unconfirmed
What it is

The MailerSend WordPress plugin before 1.0.8 does not perform a nonce check on its configuration-delete action (it verifies the manage_options capability but ignores the nonce), so an attacker can trick a logged-in administrator into visiting a crafted page that wipes the MailerSend WordPress plugin before 1.0.8's SMTP configuration and deactivates the MailerSend WordPress plugin before 1.0.8, breaking the site's email delivery.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00138 · 2.9th percentile
Published
2026-07-20T06:00Z
EPSS history
Timeline
  • 20 JUL 06:00Z
    MailerSend - Official SMTP Integration < 1.0.8 - Settings Deletion and Plugin Deactivation via CSRF
    cvelistv5