wpmanageninja FluentSMTP Plugin up to 2.2.95 on WordPress Email Logs wp_mail to.name cross site scripting

Summaryinfo

A vulnerability was found in wpmanageninja FluentSMTP Plugin up to 2.2.95. It has been declared as problematic. The impacted element is the function wp_mail of the component Email Logs. The manipulation of the argument to.name results in cross site scripting. This vulnerability was named CVE-2026-16636. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in wpmanageninja FluentSMTP Plugin up to 2.2.95. It has been classified as problematic. Affected is the function wp_mail of the component Email Logs. The manipulation of the argument to.name with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-16636 since 07/22/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are necessary for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• wpmanageninja

Name

• FluentSMTP Plugin

Version

• 2.2.0
• 2.2.1
• 2.2.2
• 2.2.3
• 2.2.4
• 2.2.5
• 2.2.6
• 2.2.7
• 2.2.8
• 2.2.9
• 2.2.10
• 2.2.11
• 2.2.12
• 2.2.13
• 2.2.14
• 2.2.15
• 2.2.16
• 2.2.17
• 2.2.18
• 2.2.19
• 2.2.20
• 2.2.21
• 2.2.22
• 2.2.23
• 2.2.24
• 2.2.25
• 2.2.26
• 2.2.27
• 2.2.28
• 2.2.29
• 2.2.30
• 2.2.31
• 2.2.32
• 2.2.33
• 2.2.34
• 2.2.35
• 2.2.36
• 2.2.37
• 2.2.38
• 2.2.39
• 2.2.40
• 2.2.41
• 2.2.42
• 2.2.43
• 2.2.44
• 2.2.45
• 2.2.46
• 2.2.47
• 2.2.48
• 2.2.49
• 2.2.50
• 2.2.51
• 2.2.52
• 2.2.53
• 2.2.54
• 2.2.55
• 2.2.56
• 2.2.57
• 2.2.58
• 2.2.59
• 2.2.60
• 2.2.61
• 2.2.62
• 2.2.63
• 2.2.64
• 2.2.65
• 2.2.66
• 2.2.67
• 2.2.68
• 2.2.69
• 2.2.70
• 2.2.71
• 2.2.72
• 2.2.73
• 2.2.74
• 2.2.75
• 2.2.76
• 2.2.77
• 2.2.78
• 2.2.79
• 2.2.80
• 2.2.81
• 2.2.82
• 2.2.83
• 2.2.84
• 2.2.85
• 2.2.86
• 2.2.87
• 2.2.88
• 2.2.89
• 2.2.90
• 2.2.91
• 2.2.92
• 2.2.93
• 2.2.94
• 2.2.95

CPE 2.3info

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CPE 2.2info

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