Dotclear <= 2.6.2 (categories.php) SQL Injection Vulnerability

• Software Link:

• Affected Versions:

Version 2.6.2 and probably prior versions.

• Vulnerability Description:

The vulnerable code is located in /admin/categories.php:

# Update order
if (!empty($_POST['save_order']) && !empty($_POST['categories_order'])) {
	$categories = json_decode($_POST['categories_order']);

	foreach ($categories as $category) {
		if (!empty($category->item_id)) {
			$core->blog->updCategoryPosition($category->item_id, $category->left, $category->right);

	dcPage::addSuccessNotice(__('Categories have been successfully reordered.'));

User input passed through the $_POST['categories_order'] parameter is not properly sanitized before being used in a call to the dcBlog::updCategoryPosition() method at line 76. This could be exploited to conduct SQL injection attacks leveraging the UPDATE statement defined in the nestedTree::updatePosition() method. Successful exploitation of this vulnerability requires an account with the “manage categories” permission.

• Solution:

Update to version 2.6.3.

• Disclosure Timeline:

[14/05/2014] – Vendor notified
[15/05/2014] – Vendor response
[16/05/2014] – Version 2.6.3 released:
[16/05/2014] – CVE number requested
[19/05/2014] – CVE number assigned
[21/05/2014] – Public disclosure

• CVE Reference:

The Common Vulnerabilities and Exposures project (
has assigned the name CVE-2014-3783 to this vulnerability.

• Credits:

Vulnerability discovered by Egidio Romano.