AUGUST 16, 2026
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Case File

CVE-2026-16636

HIGH · CVSS 7.2 EPSS 0.31%

Source: NVD + CISA KEV + EPSS · Published 2026-08-06 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The FluentSMTP plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the Recipient Display Name field within Email Logs. This flaw allows unauthenticated attackers to inject malicious scripts that execute when an administrator views specific email details, posing a significant risk of session hijacking or data theft. WordPress site administrators using this plugin should prioritize immediate updates to version 2.2.96 or later to mitigate this vulnerability.

CVE
CVE-2026-16636
Severity
HIGH
CVSS
7.2
EPSS
0.31%
WordPress

Original NVD Description

The FluentSMTP – WP SMTP Plugin with Amazon SES, SendGrid, MailGun, Postmark, Google and Any SMTP Provider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Recipient Display Name (to.name) in Email Logs in all versions up to, and including, 2.2.95 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is delivered via an attacker-controlled recipient display name (to.name) in a wp_mail() call and does not fire in the log list view — only in the detail view when an administrator uses the Prev/Next navigation controls, as that path bypasses the escapeHtml pipeline used by the list view.