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CVE-2026-45060 – Unauthenticated Blind SQL Injection – ClipBucket v5 prior to 5.5.3-#129

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Summary

CVE-2026-45060 is a critical blind SQL injection vulnerability in ClipBucket v5, an open-source PHP-based video sharing platform maintained by MacWarrior. The flaw exists in the actions/progress_video.php endpoint and allows any unauthenticated remote attacker to inject arbitrary SQL into the application’s database queries and exfiltrate sensitive data. It carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: The ids POST parameter in actions/progress_video.php accepts an array of video IDs. While single-value inputs are safely cast to integers, array-based inputs bypass this protection and are processed through mysql_clean(implode(', ', $param_videoids)). The mysql_clean() function relies on real_escape_string(), which escapes only quotes and backslashes — it does not neutralize SQL metacharacters such as commas, parentheses, hyphens, or SQL keywords. The resulting string is injected verbatim into a SQL WHERE ... IN (...) clause.
  • Trigger conditions: An attacker sends a crafted HTTP POST request to /actions/progress_video.php with a malicious ids[] array value (e.g., 0) OR (1=1)-- -) that breaks out of the SQL IN clause and injects attacker-controlled logic.
  • Attack vector: Remote, unauthenticated — no credentials, session, or user interaction required. Exploitable over the internet against any publicly accessible ClipBucket v5 instance.
  • Exploitation technique: Because direct query output is not returned, attackers use boolean-based or error-based blind techniques, inferring database contents character by character from differences in server response length or behavior.
  • Impact: Full database read and exfiltration, including user credentials, password hashes, email addresses, SMTP configuration, and all other stored data. All three impact dimensions — Confidentiality, Integrity, and Availability — are rated High.

Affected software

  • ClipBucket v5 — all versions prior to 5.5.3 – #129

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CWE: CWE-89 – Improper Neutralization of Special Elements used in an SQL Command (‘SQL Injection’)

Mitigation and recommended actions

  • Immediate: Upgrade to ClipBucket v5 version 5.5.3 – #129 or later, which contains the vendor-issued fix applying proper type-casting to all array elements before SQL query assembly.
  • If immediate patching is not possible: Restrict or block public access to the /actions/progress_video.php endpoint at the web server or network firewall level until the patch can be applied.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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