CVE-2025-31013 Overview
CVE-2025-31013 is a reflected Cross-Site Scripting (XSS) vulnerability in the Themify Folo WordPress theme. The flaw stems from improper neutralization of user-supplied input during web page generation [CWE-79]. Attackers can craft malicious URLs that, when clicked by an authenticated or unauthenticated victim, execute arbitrary JavaScript in the victim's browser session.
The vulnerability affects all versions of Themify Folo from initial release through 1.9.6. Exploitation requires user interaction, typically through phishing or social engineering, and can result in session theft, credential harvesting, or unauthorized actions performed on behalf of the victim.
Critical Impact
A successful attack allows execution of attacker-controlled JavaScript in the victim's browser, potentially compromising WordPress administrator sessions and enabling site takeover.
Affected Products
- Themify Folo WordPress theme versions up to and including 1.9.6
- WordPress installations using vulnerable Folo theme versions
- Any site administrators or visitors interacting with crafted links
Discovery Timeline
- 2026-06-17 - CVE-2025-31013 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-31013
Vulnerability Analysis
The vulnerability is a reflected XSS flaw classified under [CWE-79]. The Themify Folo theme accepts user-supplied input through HTTP request parameters and reflects that input back into the rendered HTML response without proper sanitization or output encoding. An attacker who tricks a user into visiting a crafted URL can cause the user's browser to execute attacker-controlled JavaScript within the trusted origin of the WordPress site.
Because the attack occurs in the context of the WordPress site, the injected script inherits the privileges of the authenticated user. If the victim is a site administrator, the attacker can perform privileged actions such as creating new admin accounts, modifying theme files, or installing malicious plugins.
Root Cause
The theme fails to properly neutralize input before incorporating it into the generated web page. Specifically, request parameters are reflected into the response HTML without contextual output encoding or input validation. This violates the principle of treating all user input as untrusted before rendering it in a browser context.
Attack Vector
Exploitation requires network access and user interaction. An attacker constructs a URL containing a malicious JavaScript payload as a parameter value, then delivers the URL through phishing email, malicious advertising, or third-party site links. When the victim visits the URL, the vulnerable theme reflects the payload into the HTML response, and the browser executes the script within the site's origin.
The scope is changed, meaning the injected script can affect resources beyond the vulnerable component itself, such as authentication cookies for the broader WordPress installation. See the Patchstack Vulnerability Report for additional technical context.
Detection Methods for CVE-2025-31013
Indicators of Compromise
- Unusual URL parameters containing HTML or JavaScript syntax such as <script>, onerror=, or javascript: in web server access logs
- HTTP referer headers originating from external phishing infrastructure leading to Themify Folo theme pages
- Unexpected WordPress administrator account creation or theme file modifications following user clicks on suspicious links
Detection Strategies
- Inspect web server and WordPress access logs for query strings containing encoded or raw script tags targeting theme endpoints
- Deploy a Web Application Firewall (WAF) with rules to identify reflected XSS patterns in request parameters
- Monitor browser console errors and Content Security Policy (CSP) violation reports submitted from site visitors
Monitoring Recommendations
- Enable WordPress audit logging to track administrator actions, user creation, and theme or plugin modifications
- Aggregate web server logs into a centralized logging platform and alert on suspicious URL parameter patterns
- Track outbound connections from the WordPress server to identify potential post-exploitation callbacks
How to Mitigate CVE-2025-31013
Immediate Actions Required
- Identify all WordPress installations running the Themify Folo theme at version 1.9.6 or earlier
- Update the theme to a patched version once released by Themify, or temporarily switch to an alternative theme
- Force password resets and session invalidation for all WordPress administrator accounts as a precaution
Patch Information
At the time of publication, the vulnerability affects Themify Folo through version 1.9.6. Site administrators should monitor the Patchstack Vulnerability Report and the Themify vendor site for an official fixed release.
Workarounds
- Deploy a WAF with reflected XSS signatures to block malicious request patterns targeting the theme
- Implement a strict Content Security Policy (CSP) header that disallows inline scripts and restricts script sources
- Restrict access to the WordPress administrative interface using IP allowlisting or VPN-based access controls
- Educate users and administrators to avoid clicking unverified links pointing to the WordPress site
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
