CVE-2024-54339 Overview
CVE-2024-54339 is a reflected cross-site scripting (XSS) vulnerability in the geoFlickr WordPress plugin developed by jbd7. The flaw affects all plugin versions through 1.3 and stems from improper neutralization of user-supplied input during web page generation [CWE-79]. Attackers can craft malicious links that execute arbitrary JavaScript in the victim's browser when clicked. The vulnerability requires user interaction but no authentication, making it suitable for phishing-driven attack chains against WordPress site visitors and administrators.
Critical Impact
Successful exploitation enables session hijacking, credential theft, and unauthorized actions performed in the context of the victim's WordPress session.
Affected Products
- jbd7 geoFlickr plugin for WordPress
- All versions through 1.3
- WordPress installations with the geoFlickr plugin active
Discovery Timeline
- 2024-12-13 - CVE-2024-54339 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2024-54339
Vulnerability Analysis
The geoFlickr plugin fails to sanitize user-controlled input before reflecting it back into HTTP responses. When a victim visits a crafted URL, the server includes the attacker's payload in the rendered HTML without applying output encoding or context-aware escaping. The browser then parses the injected content as executable JavaScript.
Reflected XSS in a WordPress plugin context is particularly impactful because authenticated administrators may follow attacker-supplied links. JavaScript running in an administrator's session can create new privileged users, install malicious plugins, or exfiltrate session cookies. The vulnerability operates across a security scope boundary, allowing attacks to affect resources beyond the vulnerable component.
Root Cause
The root cause is missing input validation and output encoding in request handlers exposed by the geoFlickr plugin. Parameters supplied through GET requests are concatenated into HTML output without sanitization routines such as esc_html(), esc_attr(), or wp_kses(). This classifies the issue under [CWE-79], Improper Neutralization of Input During Web Page Generation.
Attack Vector
The attack vector is network-based with required user interaction. An attacker crafts a URL containing a malicious script payload as a query parameter and delivers it through phishing emails, malicious advertisements, or compromised third-party sites. When the victim clicks the link, the vulnerable plugin reflects the payload into the response, and the script executes in the victim's browser under the origin of the WordPress site.
No verified public exploit code is currently available. Refer to the Patchstack advisory for additional technical context.
Detection Methods for CVE-2024-54339
Indicators of Compromise
- Web server access logs containing requests to geoFlickr plugin endpoints with URL-encoded <script>, onerror=, or javascript: payloads
- Unexpected outbound requests from administrator browsers to attacker-controlled domains shortly after clicking external links
- New WordPress administrator accounts or modified plugin files lacking corresponding audit trail entries
Detection Strategies
- Inspect HTTP query strings for common XSS payload patterns including angle brackets, event handlers, and encoded script tags
- Correlate referrer headers showing external sources with subsequent privileged WordPress actions
- Deploy web application firewall rules that flag reflected parameters appearing unescaped in response bodies
Monitoring Recommendations
- Enable WordPress audit logging plugins to track administrative actions and configuration changes
- Monitor browser-side Content Security Policy (CSP) violation reports for blocked inline script execution
- Alert on file integrity changes within the wp-content/plugins/geoflickr/ directory
How to Mitigate CVE-2024-54339
Immediate Actions Required
- Deactivate and remove the geoFlickr plugin from affected WordPress installations until a patched release is confirmed
- Audit administrator accounts and recently installed plugins for unauthorized changes
- Force password resets and session invalidation for all privileged WordPress users
Patch Information
No fixed version has been published by the vendor at the time of the advisory. The vulnerability affects geoFlickr through version 1.3. Site operators should subscribe to the Patchstack advisory for patch release notifications.
Workarounds
- Remove the geoFlickr plugin entirely if no business-critical functionality depends on it
- Deploy a WordPress-aware web application firewall to filter XSS payloads targeting plugin parameters
- Implement a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins
- Restrict administrator access to trusted networks and require multi-factor authentication for WordPress login
# Example: remove the vulnerable plugin via WP-CLI
wp plugin deactivate geoflickr
wp plugin delete geoflickr
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
