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Kadence Blocks <= 3.7.5 — Authenticated (Contributor+) Sensitive Information Exposure via Block Editor proData Localization

CVE-2026-11357Published · Updated

Action summary

Affected: ≤3.7.5Update to 3.7.6 or newer

All remediation steps
Watch plugin
Severity
Medium4.3
CVSS
4.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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:U Scope
Unchanged
C:L Confidentiality
Low
I:N Integrity
None
A:N Availability
None
Weakness
CWE-200 Information Exposure
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Kadence Blocks — Page Builder Toolkit for Gutenberg Editor kadence-blocks

  1. Affected≤ 3.7.5
  2. Patched in3.7.6

Update to 3.7.6 or newer.

You are affected if you run ≤ 3.7.5. Version 3.7.6 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 Blocks — Page Builder Toolkit for Gutenberg Editor.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 3.7.6, 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 Blocks — Page Builder Toolkit for Gutenberg Editor to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to se1en.

The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.7.5 via the editor_assets_variables. This makes it possible for authenticated attackers, with contributor-level access and above, to extract the site's connected Kadence account license key, license owner email, api_key, api_email, and license domain from the browser console by inspecting window.kadence_blocks_params.proData. Exploitation requires only that an administrator has previously connected a valid Kadence license; the full credential bundle is then readable by any Contributor-level user from the block editor client context without any server-side request manipulation.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor

All 43
More vulnerabilities in Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
SeverityVulnerabilityCVEPublished
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.8.0.2Update to 3.8.1
CVE-2026-39742
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.8.0.1Update to 3.8.0.2
CVE-2026-115602
Medium6.4Authenticated (Author+) Stored Cross-Site Scripting via Block Font Family Attribute
≤3.7.12Update to 3.7.12.1
CVE-2026-104762
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.7.12Update to 3.7.12.1
CVE-2026-105890
High7.2Unauthenticated Stored Cross-Site Scripting
≤3.7.11.1Update to 3.7.12
CVE-2026-103354

Same weakness (Information Exposure)

All Information Exposure
Other Information Exposure 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 4.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
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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