CVE-2024-8283 in Slider Plugin
Summary
by MITRE • 09/30/2024
The Slider by 10Web WordPress plugin before 1.2.59 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
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Analysis
by VulDB Data Team • 03/09/2025
The vulnerability identified as CVE-2024-8283 affects the Slider by 10Web WordPress plugin version 1.2.59 and earlier, presenting a critical security risk through stored cross-site scripting flaws. This issue arises from insufficient sanitization and escaping of user-provided settings within the plugin's administrative interface. The vulnerability specifically targets high-privilege users including administrators who possess the capability to modify plugin configurations, making it particularly dangerous in multi-site WordPress environments where such privileges might be more prevalent.
The technical flaw stems from the plugin's failure to properly validate and sanitize input data before storing it in the WordPress database. When administrators configure slider settings through the plugin's interface, malicious scripts can be injected into fields that should only accept legitimate configuration parameters. These stored scripts then execute whenever the affected pages are loaded, creating persistent XSS attack vectors that can compromise user sessions and potentially escalate privileges. The vulnerability is particularly concerning because it operates even when WordPress is configured to disallow unfiltered_html capability, which is a standard security measure in multi-site installations.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, deface websites, steal sensitive information, or redirect users to malicious domains. In multi-site environments, where administrators might have broader access rights, the potential for damage increases significantly. The stored nature of the vulnerability means that once exploited, malicious payloads persist until manually removed, making detection and remediation more challenging. Attackers can leverage this vulnerability to establish persistent access points within WordPress installations, potentially compromising entire network infrastructures.
Security practitioners should immediately update the Slider by 10Web plugin to version 1.2.59 or later, which contains the necessary patches to address the sanitization issues. Additionally, implementing proper input validation and output escaping mechanisms should be prioritized for all WordPress plugins handling user input. Organizations should review their WordPress security configurations, particularly in multi-site environments, to ensure that unfiltered_html capabilities are appropriately restricted. This vulnerability aligns with CWE-79 which addresses cross-site scripting flaws, and represents a specific instance of how inadequate input sanitization can create persistent security risks. The ATT&CK framework categorizes this as a technique involving code injection and privilege escalation, making it particularly dangerous in enterprise environments where WordPress installations serve critical business functions.