CVE-2026-58493 in grav
Summary
by MITRE • 07/10/2026
grav-plugin-database is the database plugin for Grav CMS. Prior to 1.2.0, Database::__call builds PDO DSN strings by directly concatenating user-configurable YAML values from fields such as host, dbname, charset, server, database, directory, and filename without sanitization or validation, allowing an administrator with plugin configuration access to inject DSN attributes or path traversal values. This issue is fixed in version 1.2.0.
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Analysis
by VulDB Data Team • 07/10/2026
The grav-plugin-database vulnerability represents a critical security flaw in the Grav CMS database plugin that stems from improper input handling during PDO DSN string construction. This vulnerability exists in versions prior to 1.2.0 and manifests when the Database::__call method directly concatenates user-configurable YAML values without any sanitization or validation processes. The affected parameters include host, dbname, charset, server, database, directory, and filename fields that administrators can configure through the plugin settings. When an attacker with access to plugin configuration capabilities manipulates these values, they can inject malicious DSN attributes or exploit path traversal mechanisms to gain unauthorized access to the underlying database system.
The technical implementation of this vulnerability aligns with CWE-77 and CWE-94, which address improper input validation and code injection flaws respectively. The flaw occurs at the application layer where user-supplied configuration values are directly incorporated into database connection strings without proper sanitization. This creates an environment where malicious actors can manipulate the DSN construction process to redirect database connections or access unintended file paths. The vulnerability leverages the trust model of the CMS administration interface, where legitimate administrative privileges are used to execute unauthorized database operations through carefully crafted configuration inputs.
The operational impact of this vulnerability extends beyond simple data access, as it could enable attackers to perform various malicious activities including but not limited to unauthorized database connection redirection, data exfiltration, or even privilege escalation within the database environment. An attacker with plugin configuration access can potentially redirect connections to malicious database servers, inject malicious parameters that alter database behavior, or traverse file system paths to access sensitive information. The attack vector requires administrative access to the Grav CMS plugin configuration but represents a significant risk as it allows for lateral movement and data compromise within the database infrastructure.
Mitigation strategies for this vulnerability must focus on implementing proper input validation and sanitization mechanisms before any user-configurable values are incorporated into DSN strings. Organizations should immediately upgrade to version 1.2.0 or later where the vulnerability has been addressed through proper parameter validation and sanitization processes. Additionally, administrators should implement principle of least privilege access controls for plugin configuration settings, ensuring that only trusted personnel have the ability to modify database connection parameters. The implementation of input validation frameworks and regular security audits of CMS plugins can prevent similar vulnerabilities from emerging in other components of the system. Organizations should also consider implementing network segmentation and monitoring solutions to detect unauthorized database connection attempts or unusual access patterns that might indicate exploitation of such vulnerabilities.