CVE-2024-49269: My Flatonica XSS Vulnerability

CVE-2024-49269 Overview

CVE-2024-49269 is an unauthenticated reflected Cross-Site Scripting (XSS) vulnerability affecting the My Flatonica WordPress theme in versions 0.0.8 and earlier. The flaw maps to CWE-79, Improper Neutralization of Input During Web Page Generation. Attackers can inject malicious script payloads into reflected response parameters that execute in the victim's browser when they click a crafted link. Successful exploitation requires user interaction but no authentication, and the scope change indicates impact extends beyond the vulnerable component.

Critical Impact
Unauthenticated attackers can execute arbitrary JavaScript in a victim's browser session, enabling session hijacking, credential theft, and administrative account takeover when a logged-in WordPress administrator visits a crafted link.

Affected Products

My Flatonica WordPress theme version 0.0.8
My Flatonica WordPress theme versions prior to 0.0.8
WordPress sites using the vulnerable theme without mitigation

Discovery Timeline

2026-06-17 - CVE-2024-49269 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-49269

Vulnerability Analysis

The My Flatonica WordPress theme fails to properly sanitize and encode user-supplied input before reflecting it into rendered HTML output. An attacker crafts a URL containing JavaScript payloads in a vulnerable parameter and delivers it to a target through phishing, social media, or malicious advertising. When the victim loads the URL, the unsanitized input executes in the context of the WordPress site's origin.

The reflected XSS class differs from stored XSS in that the payload is not persisted on the server. Each exploitation requires the attacker to lure a new victim into clicking the malicious link. Because the vulnerability is unauthenticated, no prior access to the WordPress site is required to trigger the flaw.

The scope change reflected in the CVSS vector indicates the injected script can affect resources beyond the vulnerable theme component, including authenticated WordPress administrative sessions if the victim holds elevated privileges.

Root Cause

The root cause is missing output encoding on user-controlled input that flows from HTTP request parameters into the HTML response. The theme renders attacker-controlled values into the DOM without applying WordPress sanitization functions such as esc_html(), esc_attr(), or wp_kses(). This omission allows script tags and event handler attributes to be parsed and executed by the browser.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker constructs a URL targeting the vulnerable My Flatonica theme parameter, embedding a JavaScript payload. The attacker distributes the link through email, messaging, or web content. When a victim with an active WordPress session opens the link, the browser executes the payload under the site's origin, granting access to cookies, local storage, and authenticated API endpoints.

For technical details, refer to the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2024-49269

Indicators of Compromise

HTTP request logs containing URL-encoded <script>, onerror=, onload=, or javascript: patterns in query parameters targeting My Flatonica theme endpoints
Unexpected outbound requests from administrator browser sessions to attacker-controlled domains following a click on an external link
WordPress administrator account changes, new user creations, or plugin installations without corresponding legitimate admin activity

Detection Strategies

Inspect web server access logs for reflected XSS payload signatures targeting theme template files and query parameters
Deploy a Web Application Firewall (WAF) with rules tuned to block common XSS payload patterns and encoded variants
Monitor Content Security Policy (CSP) violation reports for inline script execution attempts on pages rendered by the My Flatonica theme

Monitoring Recommendations

Enable verbose HTTP request logging at the web server and reverse proxy tier to capture full query strings and referrers
Correlate WordPress administrative actions with the source IP and user agent that initiated the session to identify hijacked sessions
Alert on new WordPress user accounts created with administrative roles or modifications to existing privileged accounts

How to Mitigate CVE-2024-49269

Immediate Actions Required

Identify all WordPress sites running the My Flatonica theme at version 0.0.8 or earlier and inventory their administrative users
Deactivate the My Flatonica theme until a patched version is confirmed available from the vendor
Force a logout of all active WordPress sessions and require administrators to reset passwords from a known-clean device

Patch Information

At the time of publication, no vendor patch is referenced in the NVD record. Site operators should monitor the Patchstack advisory for an updated theme release that addresses input sanitization in the affected parameter.

Workarounds

Replace the My Flatonica theme with a maintained alternative theme that receives active security updates
Deploy a Web Application Firewall with virtual patching rules that block reflected XSS payloads targeting the theme's vulnerable parameters
Implement a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins
Train administrators to avoid clicking unsolicited links to the WordPress site, particularly while authenticated

bash

# Example WAF rule (ModSecurity) to block reflected XSS payloads
SecRule ARGS "@rx (?i)(<script|javascript:|onerror=|onload=)" \
    "id:1004924,phase:2,deny,status:403,msg:'Blocked reflected XSS attempt against My Flatonica theme'"