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WordPress plugin

WP Mail SMTP by WPForms <= 1.3.3 — Unspecified Cross-Site Scripting

5438a03c-9081-4e1a-ad81-2e7a0f180e84Published · Updated

Action summary

Affected: <1.4.0Update to 1.4.0 or newer

All remediation steps
Watch plugin
Severity
Medium6.4
CVSS
6.4
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

WP Mail SMTP by WPForms – SMTP for Reliable Email Delivery with Gmail, Outlook, Amazon SES, Brevo, Other SMTP & More wp-mail-smtp

  1. Affected< 1.4.0
  2. Patched in1.4.0

Update to 1.4.0 or newer.

You are affected if you run < 1.4.0. Version 1.4.0 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP Mail SMTP by WPForms – SMTP for Reliable Email Delivery with Gmail, Outlook, Amazon SES, Brevo, Other SMTP & More.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 1.4.0, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch WP Mail SMTP by WPForms – SMTP for Reliable Email Delivery with Gmail, Outlook, Amazon SES, Brevo, Other SMTP & More to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to RIPS Technologies.

The WP Mail SMTP by WPForms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the tab parameter in versions up to, and including 1.3.3. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in administrative pages that execute whenever a user accesses the page with the stored web scripts.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in WP Mail SMTP by WPForms – SMTP for Reliable Email Delivery with Gmail, Outlook, Amazon SES, Brevo, Other SMTP & More

All 2
More vulnerabilities in WP Mail SMTP by WPForms – SMTP for Reliable Email Delivery with Gmail, Outlook, Amazon SES, Brevo, Other SMTP & More
SeverityVulnerabilityCVEPublished
Low2.7Authenticated (Admin+) SMTP Password Exposure
≤4.0.1Update to 4.1.0
CVE-2024-6694

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 6.4

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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