CVE-2024-54350 Overview
CVE-2024-54350 is a stored cross-site scripting (XSS) vulnerability in the hmd WordPress theme developed by hjyl. The flaw affects all versions up to and including version 2.0. It stems from improper neutralization of user-supplied input during web page generation [CWE-79]. Attackers can inject malicious scripts that persist within the application and execute in the browsers of other users who view affected pages. Exploitation requires user interaction and can result in session compromise, content manipulation, or redirection to attacker-controlled resources.
Critical Impact
Authenticated or unauthenticated attackers can inject persistent JavaScript payloads that execute in administrator or visitor browsers, enabling session theft and unauthorized actions within the WordPress site.
Affected Products
- hjyl hmd WordPress theme — all versions through 2.0
- WordPress sites using the vulnerable theme
- Browsers rendering pages served by affected installations
Discovery Timeline
- 2024-12-18 - CVE-2024-54350 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2024-54350
Vulnerability Analysis
The vulnerability is a stored XSS issue in the hmd WordPress theme. User-controlled input is rendered into HTML output without proper sanitization or output encoding. Because the payload is stored server-side, it executes each time a victim loads the affected page. The vulnerability is exploitable over the network and requires victim interaction such as visiting a page that contains the injected payload. Scope is changed, meaning the injected script executes in the browser security context of users beyond the attacker.
Successful exploitation can lead to limited confidentiality, integrity, and availability impact on the victim's browser session. Common abuse scenarios include theft of session cookies, forced administrative actions through CSRF chaining, defacement of rendered content, and redirection to phishing or malware delivery infrastructure.
Root Cause
The root cause is missing or insufficient input sanitization and output encoding in the hmd theme's request handlers. Input fields accept HTML or JavaScript content and persist the payload to the WordPress database. When stored data is later rendered into theme templates, it is emitted without escaping functions such as esc_html(), esc_attr(), or wp_kses(). This violates WordPress secure coding guidance for user-controllable data.
Attack Vector
An attacker submits a crafted payload containing JavaScript through a field exposed by the vulnerable theme. The payload is stored in the site database. When an administrator, editor, or visitor loads a page that renders the stored value, the browser executes the embedded script. Refer to the Patchstack WordPress Vulnerability Report for additional technical context.
Detection Methods for CVE-2024-54350
Indicators of Compromise
- Stored database entries containing <script>, onerror=, onload=, or javascript: strings in theme-managed fields
- Unexpected outbound requests from administrator browsers to unfamiliar domains following access to theme-rendered pages
- Newly created administrator accounts or modified user roles correlated with admin page visits
- Anomalous Content Security Policy (CSP) violation reports referencing inline script execution
Detection Strategies
- Audit WordPress database tables for HTML or JavaScript content stored in fields handled by the hmd theme
- Inspect web server logs for POST requests containing encoded script tags or event handler attributes
- Use web application scanners with stored XSS detection signatures targeting WordPress themes
- Correlate browser-side CSP violations with specific URLs served by the vulnerable theme
Monitoring Recommendations
- Enable WordPress activity logging plugins to record content changes and user actions
- Monitor outbound HTTP traffic from administrative sessions for connections to suspicious destinations
- Alert on file integrity changes within the wp-content/themes/hmd/ directory
- Track failed and successful logins immediately following admin visits to affected pages
How to Mitigate CVE-2024-54350
Immediate Actions Required
- Disable or remove the hmd theme until a patched release is available from the vendor
- Switch the active site to a maintained WordPress theme with current security support
- Review stored content created during the exposure window and purge entries containing script payloads
- Rotate WordPress administrator passwords and invalidate active sessions
Patch Information
No fixed version is documented in the available advisory. All versions of the hmd theme through 2.0 remain affected. Monitor the Patchstack WordPress Vulnerability Report for vendor updates.
Workarounds
- Deploy a Web Application Firewall (WAF) with rules that block stored XSS payloads targeting WordPress themes
- Enforce a strict Content Security Policy that disallows inline scripts and untrusted script sources
- Restrict access to theme-managed input fields to trusted authenticated users only
- Apply input filtering at the reverse proxy layer to reject requests containing script tags in theme parameters
# Example Content Security Policy header to reduce XSS impact
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
