CVE-2026-33025 in AVideo-Encoder
Summary
by MITRE • 03/20/2026
AVideo is a video-sharing Platform. Versions prior to 8.0 contain a SQL Injection vulnerability in the getSqlFromPost() method of Object.php. The $_POST['sort'] array keys are used directly as SQL column identifiers inside an ORDER BY clause. Although real_escape_string() was applied, it only escapes string-context characters (quotes, null bytes) and provides no protection for SQL identifiers — making it entirely ineffective here. This issue has been fixed in version 8.0. To workaround this issue without upgrading, operators can apply a WAF rule to block POST requests where any sort[*] key contains characters outside [A-Za-z0-9_]. Alternatively, restrict access to the queue view (queue.json.php, index.php) to trusted IP ranges only.
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Analysis
by VulDB Data Team • 03/26/2026
The vulnerability identified as CVE-2026-33025 affects AVideo, a popular video-sharing platform, specifically versions prior to 8.0. This issue represents a critical SQL injection vulnerability that stems from improper handling of user input within the platform's database query construction mechanism. The flaw exists within the getSqlFromPost() method of the Object.php file, where the application processes sorting parameters submitted through HTTP POST requests. The vulnerability demonstrates a fundamental misunderstanding of SQL injection prevention techniques, as the developers attempted to use real_escape_string() as a protective measure while completely overlooking the context in which this function operates.
The technical flaw manifests when the application processes the $_POST['sort'] array, which contains user-supplied data used directly as SQL column identifiers within an ORDER BY clause. While the developers implemented real_escape_string() to sanitize the input, this approach fails dramatically because real_escape_string() is specifically designed to escape characters that are meaningful in SQL string contexts such as quotes and null bytes. It provides no protection against SQL identifier injection attacks where the vulnerability occurs at the structural level of SQL queries rather than the string literal level. This represents a classic violation of the principle that different SQL contexts require different escaping mechanisms, and the flaw aligns with CWE-89 which specifically addresses SQL injection vulnerabilities in database applications.
The operational impact of this vulnerability is severe as it allows authenticated attackers to manipulate database queries through the sorting functionality, potentially enabling unauthorized data access, modification, or deletion. Attackers could exploit this weakness to extract sensitive information from the database, including user credentials, personal data, or system configuration details. The vulnerability is particularly dangerous because it operates within the platform's core data processing mechanisms, and the attack surface extends to any functionality that relies on the affected getSqlFromPost() method. This represents a significant risk to data confidentiality and integrity, particularly in environments where the video-sharing platform handles sensitive user information or business-critical data.
The remediation approach for this vulnerability requires careful consideration of the application architecture and security practices. Version 8.0 of AVideo addresses this issue through proper input validation and sanitization techniques that ensure SQL identifiers are properly escaped or validated before being used in database queries. Organizations without immediate upgrade capabilities should implement compensating controls such as web application firewall rules that specifically target the vulnerable parameter structure. The suggested WAF rule blocks POST requests containing sort[*] keys with characters outside the alphanumeric and underscore character set, effectively preventing malicious SQL identifier injection attempts. Additionally, restricting access to the affected endpoints queue.json.php and index.php to trusted IP ranges provides an additional layer of defense by limiting the attack surface to known, trusted sources. This vulnerability demonstrates the importance of following established security frameworks such as the OWASP Top Ten and adheres to ATT&CK technique T1071.004 for application layer protocol manipulation, emphasizing the need for proper input validation and context-appropriate sanitization techniques in database interaction code.