CVE-2026-54507

Vvveb before version 1.0.8.2 contains an unrestricted file upload vulnerability in the media upload handler that allows authenticated users with media-upload permissions to bypass extension restrictions by uploading a .htaccess file. This enables attackers to upload .phtml files containing arbitrary PHP code and execute the payload through an unauthenticated HTTP GET request.

Vvveb before version 1.0.8.2 contains an XML external entity (XXE) injection vulnerability in the admin Tools/Import feature that allows authenticated site_admin users to read arbitrary files and modify database records.

Vvveb before version 1.0.8.2 contains an authenticated remote code execution vulnerability in the admin code editor that allows low-privilege authenticated users to execute arbitrary code through insufficient file extension restrictions.

Vvveb before version 1.0.8.2 contains a hard-coded credentials vulnerability in its docker-compose-apache.yaml configuration that allows unauthenticated attackers to access the bundled phpMyAdmin container with pre-configured database credentials.

Vvveb prior to version 1.0.8.1 contains a code injection vulnerability in the installation endpoint where the subdir POST parameter is written unsanitized into the env.php configuration file. Attackers can inject arbitrary PHP code by breaking out of the string context in the define statement, leading to unauthenticated remote code execution as the web server user.

In Vvveb prior to 1.0.8.5, getThemeFolder() returns the attacker-controlled theme parameter without sanitization, and backupFolder() concatenates it beneath DIR_THEMES before editor/revisions/load or editor/revisions/delete operates on a named .html file. sanitizeBackupFileName() strips traversal characters only from the separate file parameter and does not protect the theme directory component. An authenticated user with the default Editor role and editor/* permission can submit traversal sequences that redirect file_get_contents() or unlink() to a reachable backup subdirectory outside the web root.

In Vvveb CMS from 1.0.0 to 1.0.8.5, saveGlobalElements() concatenates the attacker-controlled file portion of data-v-save-global to the active theme directory, enabling path traversal. An authenticated user with the default Editor role can write arbitrary PHP content outside the theme directory, allowing persistent webshell placement.

In Vvveb prior to 1.0.8.5, sanitizeHTML() has a flawed on* event-handler regex and a faulty loop condition, so forbidden nested tags are removed only once. A user with Author role or higher can store malicious JavaScript in the bio field that executes for other users.

Vvveb before version 1.0.8.4 allows a low-privileged Vendor to access products owned by another Vendor. The product controller does not verify ownership for duplicate and delete actions, enabling reading, duplicating, and deleting products and related data.

Vvveb before version 1.0.8.4 allows a low-privileged Vendor to access revisions for products owned by another Vendor. SQL queries do not verify product ownership for revision reads, restores, and deletes.