CVE-2026-2722 in Stock Ticker Plugin
Summary
by MITRE • 03/07/2026
The Stock Ticker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.26.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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Analysis
by VulDB Data Team • 03/08/2026
The vulnerability identified as CVE-2026-2722 affects the Stock Ticker plugin for WordPress, specifically targeting versions up to and including 3.26.1. This represents a critical security flaw that undermines the integrity of WordPress installations by enabling malicious actors to execute arbitrary code through carefully crafted input. The vulnerability stems from inadequate input sanitization and insufficient output escaping mechanisms within the plugin's administrative settings interface, creating a persistent cross-site scripting vector that can compromise entire network installations.
The technical flaw manifests in the plugin's failure to properly validate and sanitize user input within its admin configuration pages. When administrators modify settings through the WordPress dashboard, the plugin does not adequately filter or escape potentially malicious script content, allowing attackers to inject JavaScript code that persists in the database. This stored XSS vulnerability operates through the administrative interface where privileged users can modify plugin parameters, with the injected code executing whenever any user accesses pages containing the malicious content. The vulnerability specifically impacts multi-site WordPress installations and configurations where the unfiltered_html capability has been disabled, creating a targeted attack surface that requires elevated privileges to exploit.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers with administrator-level permissions to potentially escalate their privileges and gain unauthorized access to sensitive system resources. The stored nature of the vulnerability means that malicious scripts remain persistent in the system until manually removed, allowing attackers to maintain access over extended periods. This threat is particularly concerning in multi-site environments where a successful attack on one site can potentially compromise the entire network of interconnected WordPress installations. The vulnerability directly aligns with CWE-79, which describes cross-site scripting flaws resulting from insufficient input validation and output escaping.
Mitigation strategies for CVE-2026-2722 require immediate action to address the root cause through proper input validation and output escaping mechanisms. WordPress administrators should upgrade to the latest version of the Stock Ticker plugin where the vulnerability has been patched, while also implementing additional security measures such as restricting administrative privileges to only essential personnel. The mitigation approach should include regular security audits of plugin installations, monitoring for unauthorized modifications to administrative settings, and implementing network-level protections such as web application firewalls that can detect and block malicious script injection attempts. Organizations should also consider implementing the principle of least privilege, ensuring that only users requiring administrative access have the necessary permissions to modify plugin configurations, thereby reducing the potential attack surface and limiting the impact of successful exploitation attempts.