CVE-2025-31427 Overview
CVE-2025-31427 is a reflected Cross-Site Scripting (XSS) vulnerability in the designthemes Invico WordPress Consulting Business Theme. The flaw affects all versions of the theme up to and including 1.9. It results from improper neutralization of user-supplied input during web page generation, classified under [CWE-79].
An attacker can craft a malicious URL that, when visited by an authenticated or unauthenticated user, executes arbitrary JavaScript in the victim's browser context. Successful exploitation can lead to session theft, credential harvesting, or redirection to attacker-controlled infrastructure. The vulnerability requires user interaction and operates over the network.
Critical Impact
Reflected XSS in the Invico theme enables attackers to execute arbitrary JavaScript in a victim's browser via a crafted link, potentially compromising WordPress administrator sessions.
Affected Products
- designthemes Invico - WordPress Consulting Business Theme, versions through 1.9
- WordPress sites running the vulnerable Invico theme
- Any browser session interacting with the affected theme endpoints
Discovery Timeline
- 2025-07-16 - CVE-2025-31427 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-31427
Vulnerability Analysis
The vulnerability is a reflected XSS issue affecting the Invico theme's request handling. User-controlled input is reflected into HTTP responses without proper sanitization or output encoding. When the browser renders the response, embedded script content executes within the site's origin.
Reflected XSS differs from stored XSS in that the payload is delivered through a single HTTP request, typically via a query parameter in a crafted link. The attacker must convince a victim to click the malicious URL. Once executed, the script inherits the victim's privileges on the WordPress site.
The EPSS score is 0.185%, indicating low observed exploitation activity. However, XSS remains a common initial access vector for WordPress theme and plugin attacks. No public proof-of-concept exploit is currently available in exploit databases.
Root Cause
The root cause is improper neutralization of input during web page generation [CWE-79]. The theme accepts request parameters and writes them into HTML responses without applying context-appropriate output encoding such as HTML entity encoding or JavaScript escaping. WordPress provides functions such as esc_html(), esc_attr(), and esc_url() for this purpose, but the affected code paths do not invoke them consistently.
Attack Vector
The attack vector is network-based and requires user interaction. An attacker crafts a URL containing a malicious payload in a vulnerable parameter, then distributes it through phishing emails, malicious advertisements, or social media. When a victim clicks the link, the WordPress site reflects the payload into the response and the browser executes it.
Because the scope is changed (S:C in the CVSS vector), the script can affect resources beyond the vulnerable component, including cookies and tokens scoped to the parent WordPress installation. Administrator users are high-value targets, as their sessions enable persistent compromise of the site.
No verified exploitation code is available. See the Patchstack XSS Vulnerability Report for additional technical context.
Detection Methods for CVE-2025-31427
Indicators of Compromise
- HTTP request logs containing <script>, javascript:, onerror=, or onload= payloads in query parameters directed at Invico theme endpoints
- Unexpected outbound requests from administrator browsers to unknown domains following clicks on links referencing the WordPress site
- New or modified WordPress administrator accounts created shortly after suspicious URL access events
Detection Strategies
- Inspect web server access logs for URL-encoded script payloads, HTML tags, and event handlers in parameters served by the Invico theme
- Deploy a Web Application Firewall (WAF) with rules targeting reflected XSS patterns and monitor for blocked requests
- Correlate browser referrer logs with WordPress administrator session events to identify victim interactions with crafted URLs
Monitoring Recommendations
- Enable WordPress audit logging to capture configuration changes, user creation, and plugin or theme modifications
- Monitor Content Security Policy (CSP) violation reports for inline script execution attempts
- Track endpoint telemetry for browser processes spawning unexpected child processes or making anomalous network connections after WordPress site access
How to Mitigate CVE-2025-31427
Immediate Actions Required
- Identify all WordPress installations using the Invico theme version 1.9 or earlier
- Disable or replace the Invico theme until a patched version is released by designthemes
- Force password resets and session invalidation for WordPress administrator accounts as a precaution
- Deploy a WAF rule set that blocks reflected XSS payloads targeting WordPress theme endpoints
Patch Information
No fixed version is identified in the available CVE data. Monitor the Patchstack XSS Vulnerability Report and the designthemes vendor channels for an updated theme release addressing CVE-2025-31427.
Workarounds
- Apply a Content Security Policy that restricts inline script execution and limits script sources to trusted origins
- Restrict WordPress administrator access to known IP ranges through .htaccess or reverse proxy rules
- Train administrators and editors to avoid clicking unsolicited links referencing the WordPress site, especially those containing encoded characters or unusual parameters
- Use a WAF with virtual patching capabilities to filter malicious payloads targeting the Invico theme
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
