CVE-2026-39785 in Gmedia Photo Gallery Plugin
Summary
by MITRE • 10/06/2026
Unauthenticated SQL Injection in Gmedia Photo Gallery <= 1.25.1 versions.
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified as an unauthenticated SQL injection flaw within Gmedia Photo Gallery versions up to and including 1.25.1 represents a critical security deficiency that allows remote attackers to execute arbitrary Structured Query Language commands against the underlying database management system without requiring valid credentials or prior authentication. This type of vulnerability typically arises when web applications fail to properly sanitize user-supplied input before incorporating it into SQL queries used for data retrieval, modification, or deletion operations. In the specific context of Gmedia Photo Gallery, which is a WordPress plugin designed for managing and displaying photo galleries, this flaw likely exists in one or more endpoints that process parameters related to gallery configuration, image metadata, or administrative functions without adequate validation mechanisms. The absence of authentication requirements significantly lowers the barrier to entry for attackers, enabling any internet user with network access to exploit the vulnerability remotely via standard HTTP requests.
From a technical perspective, SQL injection vulnerabilities are classified under CWE-89 in the Common Weakness Enumeration directory, which specifically addresses Improper Neutralization of Special Elements used in an SQL Command. The root cause generally involves the direct concatenation or interpolation of unsanitized user input into dynamic SQL statements. When the application constructs a query such as SELECT * FROM gallery_images WHERE id = [user_input], and the variable [user_input] is not validated against expected data types, lengths, or character sets, an attacker can inject malicious payloads designed to alter the logic of the original query. Common exploitation techniques include UNION-based attacks to extract additional data from other tables, error-based injections to reveal database structure through returned errors, or blind SQL injection methods that rely on time delays or boolean responses to infer information about the database schema. The severity is exacerbated by the fact that many WordPress plugins operate with elevated privileges relative to standard user roles, potentially granting access to sensitive configuration details, plugin settings, and even core site data if the underlying MySQL server permissions are overly permissive.
The operational impact of this vulnerability extends far beyond simple data leakage. Successful exploitation can lead to a complete compromise of the web application's backend infrastructure. Attackers may extract sensitive information such as administrator usernames and hashed passwords, which could then be cracked offline to gain full administrative control over the WordPress installation. Furthermore, depending on the database engine configuration and privileges granted to the database user account running the application, an attacker might execute operating system commands through specific SQL functions like LOAD_FILE or INTO OUTFILE in MySQL, potentially leading to remote code execution and total server compromise. This aligns with several tactics within the MITRE ATT&CK framework, particularly T1059 Command and Scripting Interpreter for executing arbitrary code, T1078 Valid Accounts if credential harvesting leads to further lateral movement, and T1213 Data from Information Repositories for exfiltrating structured data. The ability to modify or delete database records also poses a significant risk of integrity loss, allowing attackers to deface websites, inject malicious content into galleries, or disrupt service availability by dropping critical tables.
Mitigation strategies must address both immediate remediation and long-term defensive posture improvements. The most effective solution is to upgrade Gmedia Photo Gallery to the latest patched version where this vulnerability has been resolved through code hardening. For organizations unable to immediately patch due to compatibility constraints, temporary mitigations should include implementing a Web Application Firewall configured with rulesets specifically tuned to detect SQL injection patterns in HTTP parameters. Additionally, database access controls should be reviewed to ensure that the application's database user operates under the principle of least privilege, restricting permissions such as FILE, SUPER, or EXECUTE to only those absolutely necessary for normal operation. Input validation and parameterized queries are essential development practices that must be enforced during future updates; developers should utilize prepared statements with bound parameters rather than string concatenation when interacting with databases. Regular security audits and static code analysis tools can help identify similar weaknesses in other plugins, ensuring a more resilient overall environment against automated scanning campaigns that frequently target known vulnerable versions of popular WordPress extensions.