CVE-2026-88855 in Joomla Gallery Extension
Summary
by MITRE • 09/20/2026
Joomla Extension - OrdaSoft.com - Authenticated, Privileged SQL Injection in OrdaSoft Joomla Gallery extension for Joomla < 6.2.7 - The extensions saveGallery() passes form data through a hand-rolled parser into Joomla’s Input object, then reads it back with the ARRAY/ STRING filter types, neither of which sanitises SQL content. Values from category_names[], catOrderIds, and image-ordering fields were concatenated directly into SQL with no quoting or integer cast, giving an authenticated core.manage user (a permission scoped to managing one gallery component, not administrator-wide trust) full read/write access to the database, including UNION-based extraction of #__users password hashes.
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Analysis
by VulDB Data Team • 09/20/2026
The vulnerability identified in OrdaSoft Joomla Gallery extensions prior to version 6.2.7 represents a critical authenticated SQL injection flaw that stems from improper input handling and insufficient data sanitization within the application's backend logic. The core issue resides in the saveGallery() function, which is responsible for processing form submissions related to gallery management. When users submit data through this interface, the extension employs a custom-built parser to process incoming fields before passing them into Joomla’s Input object. While Joomla provides robust input filtering mechanisms designed to prevent common web vulnerabilities, the specific implementation here bypasses these protections by utilizing ARRAY and STRING filter types that do not perform necessary SQL escaping or type casting for values intended for database queries. This architectural oversight allows maliciously crafted inputs to pass through the application layer largely unmodified, setting the stage for direct manipulation of backend database operations.
The technical severity of this flaw is amplified by the specific fields targeted during exploitation: category_names[], catOrderIds, and image-ordering fields. These parameters are concatenated directly into SQL statements without any quoting mechanisms or integer casting to ensure data integrity. Because these inputs are treated as raw strings rather than validated integers or properly escaped text, an attacker can inject arbitrary SQL syntax that is executed by the database engine with the privileges of the authenticated user. This lack of parameterization means that standard injection techniques such as UNION-based attacks can be successfully employed to extract sensitive information from the database schema and contents. The vulnerability effectively neutralizes any security boundaries provided by Joomla’s core input filtering, rendering those safeguards ineffective against this specific attack vector due to the extension's non-standard data handling approach.
From an operational impact perspective, the consequences of exploiting this SQL injection are severe for organizations relying on this component. Although exploitation requires authentication as a user with the core.manage permission scope, which is typically restricted to managing gallery components rather than possessing full administrator privileges, the resulting database access is comprehensive and unrestricted within that context. An attacker can achieve both read and write access to the underlying MySQL or MariaDB database associated with Joomla. This capability allows for the extraction of sensitive data including user credentials, specifically password hashes from the #__users table via UNION-based queries. Furthermore, the ability to modify database records enables attackers to alter gallery configurations, inject malicious content into public-facing pages through stored payloads, or potentially escalate privileges if other vulnerabilities exist in conjunction with this flaw. The compromise extends beyond simple data theft to include potential defacement and long-term persistence within the application environment.
This vulnerability aligns closely with CWE-89 Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection, due to the failure to sanitize user-supplied input before its inclusion in a database query. Additionally, it reflects weaknesses associated with CWE-20 Improper Input Validation and CWE-798 Use of Hard-coded Credentials if password hashes are exfiltrated for offline cracking. In terms of offensive security frameworks, this exploit maps to ATT&CK technique T1190 Exploit Public-Facing Application when considering the initial access vector through a web interface, and T1005 Data from Local System for the subsequent extraction of sensitive data such as password hashes. The scenario also touches upon privilege escalation concepts where limited administrative rights are leveraged to gain broader database control, akin to aspects of T1078 Valid Accounts if the attacker maintains persistent access through compromised credentials.
Mitigation strategies must prioritize immediate remediation by updating the OrdaSoft Joomla Gallery extension to version 6.2.7 or later, which addresses these input handling deficiencies. For environments where an update is not immediately feasible, temporary mitigations should include restricting database user permissions for the web application account to minimize the blast radius of a successful injection, although this does not prevent data exfiltration entirely. Implementing Web Application Firewalls with specific rules targeting SQL injection patterns in gallery-related endpoints may provide some layer of defense against automated exploitation attempts. Furthermore, developers and administrators should audit other custom extensions that utilize hand-rolled parsers instead of Joomla’s standard Input object methods to identify similar vulnerabilities. Ensuring strict type casting for integer fields like catOrderIds and proper escaping or parameterization for string inputs is essential to prevent recurrence in future development cycles. Regular security audits focusing on database interaction layers are recommended to maintain the integrity of Joomla-based deployments against evolving SQL injection threats.