CVE-2026-77929
HighCVSS 8.8Summary
ClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint. The FileUpload::manageFile() function fails to update the file extension after MIME validation, allowing a .php extension to persist and execute via PHP-FPM.
Risk Assessment
An authenticated attacker can execute arbitrary code on the server, leading to full system compromise and breach of data confidentiality, integrity, and availability.
Recommendation
Update ClipBucket to version 5.5.3-#182 or later; additionally verify that file extensions are correctly updated after MIME validation.
Other vulnerabilities in ClipBucket
See all- CVE-2026-77928Medium
ClipBucket v5 before 5.5.3-#182 contains a blind SQL injection vulnerability. An authenticated user can submit the msg_id parameter as an array to bypass the clean_requests() sanitization function in ClipBucket.class.php, then inject the unsanitized message ID into a SQL query in cb_pm::delete_msg().
- CVE-2026-77927Medium
ClipBucket v5 before 5.5.3-#182 contains a blind SQL injection vulnerability. An authenticated user can submit the check_photo parameter as an array to bypass the clean_requests() sanitization function in ClipBucket.class.php, then inject unsanitized values into a SQL query in photo_exists() in photos.class.php.
- CVE-2012-6643High
Multiple SQL injection vulnerabilities in the update_counter function in includes/functions.php in ClipBucket 2.6 allow remote attackers to execute arbitrary SQL commands via the time parameter to videos.php or channels.php.
- CVE-2026-80138Critical
ClipBucket V5's web installer fails to properly validate or escape the php_cli_filepath parameter before passing it to shell execution. Unauthenticated attackers can submit a crafted POST request to the installer with a malicious php_cli_filepath value to execute arbitrary commands as the web server user.
- CVE-2026-42846Critical
ClipBucket v5 is an open source video sharing platform. Prior to version 5.5.3 - #140, the Remote Play feature allowed adding videos by importing an external URL, leading to arbitrary command execution due to improper URL handling.
- CVE-2026-21875Critical
ClipBucket v5 versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. The obj_id parameter in the POST request to /actions/ajax.php is used within the user_exists function of the upload/includes/classes/user.class.php file as the $id parameter, and then used within the count function of the upload/includes/classes/db.class.php file. The $id parameter is concatenated into the query without validation or sanitization, and user-supplied input like 1' or 1=1-- - can trigger the injection. This issue does not have a fix at the time of publication.
- CVE-2025-67418Critical
ClipBucket 5.5.2 is shipped with hardcoded default administrative credentials. An unauthenticated remote attacker can log in to the admin panel, gaining full administrative control of the application.
- CVE-2026-49482Medium
ClipBucket v5 is an open source video sharing platform that prior to version 5.5.3 - #141 contained improper neutralization of SQL wildcard characters in the subtitle editing endpoint. An authenticated user could send a % character as the number parameter to overwrite all subtitle titles of any video they own in a single HTTP request.
- CVE-2026-47238Medium
ClipBucket v5 is an open source video sharing platform. In versions prior to 5.5.3 - #133, a normal authenticated user could edit another user's video subtitles due to a lack of authorization.
- CVE-2026-45418High
ClipBucket v5 is an open source video sharing platform that prior to version 5.5.3 - #132 had a vulnerability allowing authenticated users to add multiple subtitles from different files and change their titles. The POST /actions/subtitle_edit.php request used to change titles includes a number parameter that is vulnerable to SQL Injection.
Original NVD description (English source)
ClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint. The FileUpload::manageFile() function in fileupload.class.php fails to update the file extension after MIME validation, allowing an attacker-controlled .php extension to persist on disk and execute as PHP via PHP-FPM when the uploaded file is retrieved.