CVE-2026-85386

Concrete CMS before 9.5.4 did not sanitize XML and XSLT documents uploaded through a public Form Block file-upload question. Plain XML uploads were validated by file extension only and stored as publicly accessible files that were served inline from the application's own origin. An unauthenticate...

EUVD-2026-80879

Concrete CMS before 9.5.4 did not sanitize XML and XSLT documents uploaded through a public Form Block file-upload question. Plain XML uploads were validated by file extension only and stored as publicly accessible files that were served inline from the application's own origin. An unauthenticate...

CVE-2026-85386

Concrete CMS before 9.5.4 is vulnerable to stored cross-site scripting via unauthenticated file upload in the Form Block component. XML and XSLT documents submitted through a public file-upload question were validated by file extension only and served inline from the application's own origin. An ...

CVE-2026-81896

Concrete CMS before 9.5.3 does not apply HTML entity encoding to user-defined Form block question labels when rendering them as column headers in the Dashboard Form Submissions report concrete/singlepages/dashboard/reports/forms/legacy.php. a rogue editor could store markup or script in a label...

CVE-2026-81896

Concrete CMS before 9.5.3 does not apply HTML entity encoding to user-defined Form block question labels when rendering them as column headers in the Dashboard Form Submissions report concrete/singlepages/dashboard/reports/forms/legacy.php. a rogue editor could store markup or script in a label...

EUVD-2026-78928

Concrete CMS before 9.5.3 does not apply HTML entity encoding to user-defined Form block question labels when rendering them as column headers in the Dashboard Form Submissions report concrete/singlepages/dashboard/reports/forms/legacy.php. a rogue editor could store markup or script in a label...

CVE-2026-5626 Survey Form Block <= 1.0.1 - Missing Authorization to Authenticated (Subscriber+) Survey Submission Data Export

The Survey Form Block plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the getalldata function in all versions up to, and including, 1.0.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to export a...

EUVD-2026-50110

The Survey Form Block plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the getalldata function in all versions up to, and including, 1.0.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to export a...

CVE-2026-5626

The CVE affects the WordPress plugin “Survey Form Block” (versions up to and including 1.0.1). A missing capability check in get_all_data() enables authenticated users with Subscriber-level access and above to export all survey submissions and column metadata. Public exploit details are not provi...

CVE-2026-7888

Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been...

GHSA-52PR-7VMF-2W7X Concrete CMS is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form block, and File/Set components

Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been...

EUVD-2026-34164

Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been...

CVE-2026-7888

Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been...

CVE-2026-7888 Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form block, and File/Set components that lack the allowed_classes restriction.

Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. The Form block and File/Set sinks were addressed in 9.5.2; the Workflow component sinks were addressed in 9.5.3. An...

CVE-2026-7888 Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form block, and File/Set components that lack the allowed_classes restriction.

Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. The Form block and File/Set sinks were addressed in 9.5.2; the Workflow component sinks were addressed in 9.5.3. An...

CVE-2026-7888 Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize() calls in the Workflow, Form block, and File/Set components that lack the allowed_classes restriction.

Concrete CMS below 9.5.3 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. The Form block and File/Set sinks were addressed in 9.5.2; the Workflow component sinks were addressed in 9.5.3. An...

PT-2026-46047

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.5.2 Description PHP Object Injection occurs due to the use of unserialize calls within the Workflow, Form block, and File/Set components that do not implement the allowed classes restriction. This allows an...

CVE-2026-3241

In Concrete CMS below version 9.4.8, a stored cross-site scripting XSS vulnerability exists in the "Legacy Form" block. An authenticated user with permissions to create or edit forms e.g., a rogue administrator can inject a persistent JavaScript payload into the options of a multiple-choice...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the Legacy Form block when an authenticated user with permissions to create or edit forms injects malicious JavaScript into the options of a multiple-choice question. An attacker can execute arbitrary script...

CVE-2026-3241 Concrete CMS below version 9.4.8 is vulnerable to a stored cross-site scripting (XSS) in the "Legacy Form" block.

In Concrete CMS below version 9.4.8, a stored cross-site scripting XSS vulnerability exists in the "Legacy Form" block. An authenticated user with permissions to create or edit forms e.g., a rogue administrator can inject a persistent JavaScript payload into the options of a multiple-choice...