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critical·Product Based Web Vulnerabilities·Updated Sep 7, 2026

CVE-2026-21875 Scanner

CVE-2026-21875 Scanner - Blind SQL Injection vulnerability in ClipBucket

Est. Time~10 seconds
Scan TypeGroup Scan
Targetsdomain, subdomain, ipv4
CostFree
3
Times Used
continuous scan runs
6k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2026-21875
9.8
CVSScritical
Exploitable remotely over the internet · no authentication required.

ClipBucket v5 is an open source video sharing platform. Versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. When adding a comment within a channel, there is a POST request to the /actions/ajax.php endpoint. The obj_id parameter within the POST request to /actions/ajax.php is then used within the user_exists function of the upload/includes/classes/user.class. php file as the $id parameter. It is 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 a user-supplied input like 1' or 1=1-- - can be used to trigger the injection. This issue does not have a fix at the time of publication.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
clipbucket-v5by MacWarrior
<= 5.5.2-#187
Updated Sep 10, 2026View on NVD →
Detail

ClipBucket is a popular video-sharing platform widely used for creating multimedia websites and offering their users a friendly and easy-to-use interface. Developed by MacWarrior, it is open-source and frequently chosen by small to medium enterprises, educational institutions, and individuals. It provides features for uploading, sharing, and streaming videos. The software is designed to work on various operating systems and integrates many third-party applications and plug-ins to enhance functionality. The platform is continuously updated to provide users with new features and security patches. ClipBucket is known for its community-driven support and extensibility.

A Blind SQL Injection vulnerability occurs when an attacker successfully alters the database query execution without direct feedback, often using time-based techniques. In this case, it affects the obj_id parameter within the /actions/ajax.php endpoint. Attackers can leverage this to input crafted queries and remotely inject SQL code. This vulnerability does not require authentication, allowing remote attackers to exploit and manipulate it easily. The vulnerability can be critical, as it permits tampering with or extracting sensitive database information. Resolving this involves ensuring inputs are properly sanitized and validated before processing.

Technical details show the vulnerability is found in the POST request handling of the ajax.php script. The obj_id parameter is vulnerable, as malicious actors can inject SQL code. When a crafted input is sent, the database will execute unintended commands, causing either delay or conditional data retrieval. Using blind SQL injection methods, attackers can enumerate the database schema over time by observing response patterns. This vulnerability can allow attackers to gain access to confidential information or even modify the database's content. Remediation requires input sanitization, parameterized queries, and possibly updating the software to a patched version.

Exploiting this vulnerability can have severe implications, including data leakage, unauthorized modification of data, and potential control over the database server. Attackers might access sensitive information such as user credentials or modify existing data, leading to loss of data integrity. The vulnerability could disrupt services or be used to stage further attacks against the host network or applications. Businesses using affected software may face severe reputational damage and legal consequences due to data breaches. Hence, timely patches and strict input validations are critical to mitigating such vulnerabilities.

REFERENCES

Solution Advice
  • Upgrade ClipBucket to the latest version where this vulnerability is patched.
  • Implement parameterized queries to prevent SQL injection attempts.
  • Use whitelisting of inputs and thorough data sanitization techniques.
  • Conduct regular security audits and code reviews for vulnerabilities.
  • Apply web application firewalls (WAF) to filter and monitor malicious inputs.

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CVE-2026-21875 Scanner - Blind SQL Injection vulnerability in ClipBucket | S4E