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WordPress plugin

iThemes Security < 3.6.4 — Stored Cross-Site Scripting

5f7014fc-a502-4f72-899f-c21d3ca5e5b3Published · Updated

Action summary

Affected: <3.6.4Update to 3.6.4 or newer

All remediation steps
Watch plugin
Severity
High8.3
CVSS
8.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:L Availability
Low
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Kadence Security – Password, Two Factor Authentication, and Brute Force Protection better-wp-security

  1. Affected< 3.6.4
  2. Patched in3.6.4

Update to 3.6.4 or newer.

You are affected if you run < 3.6.4. Version 3.6.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Kadence Security – Password, Two Factor Authentication, and Brute Force Protection.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 3.6.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Kadence Security – Password, Two Factor Authentication, and Brute Force Protection to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Yashar Shahinzadeh, Mormoroth.

The iThemes Security plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘license’ parameter in versions before 3.6.4 due to insufficient input sanitization and output escaping. This makes it possible for attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Kadence Security – Password, Two Factor Authentication, and Brute Force Protection

All 19
More vulnerabilities in Kadence Security – Password, Two Factor Authentication, and Brute Force Protection
SeverityVulnerabilityCVEPublished
Medium5.3IP Address Spoofing to Denial of Service
≤9.3.1Update to 9.3.2
CVE-2022-44593
Medium5.3Unauthenticated Login Page Disclosure
≤9.0.0Update to 9.0.1
—
Medium4.7Open Redirection via redirect_to_https
≤8.1.4Update to 8.1.5
CVE-2023-28786
Medium5.3Hidden Login Bypass
<7.9.1Update to 7.9.1
—
High7.5Broken Password Mechanism
≤7.6.1Update to 7.7.0
CVE-2020-36176

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 high, CVSS 8.3

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. [object Object] 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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