CVE-2024-12049 Overview
CVE-2024-12049 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the Woo Ukrposhta plugin for WordPress. The flaw resides in the handling of the order, post, and idd parameters across all plugin versions up to and including 1.17.11. The plugin fails to sanitize user-controlled input and does not properly escape output, allowing attackers to inject arbitrary JavaScript into rendered pages. Exploitation requires an unauthenticated attacker to convince a victim to click a crafted link, at which point injected scripts execute in the victim's browser context. The issue is tracked under CWE-79.
Critical Impact
Successful exploitation enables session token theft, administrative action forgery, and delivery of malicious payloads to WordPress site users.
Affected Products
- Woo Ukrposhta plugin for WordPress, versions <= 1.17.11
- WordPress sites running WooCommerce with the Woo Ukrposhta shipping integration
- Site administrators and shop managers targeted through crafted URLs
Discovery Timeline
- 2025-01-07 - CVE-2024-12049 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-12049
Vulnerability Analysis
The Woo Ukrposhta plugin integrates the Ukrposhta postal service with WooCommerce for shipping label generation and order tracking. The vulnerability arises because the plugin echoes the order, post, and idd request parameters back into HTML responses without escaping. An attacker crafts a URL containing JavaScript payloads in these parameters and delivers it through phishing or embedded links. When a WordPress user with an active session clicks the link, the malicious script executes in the browser under the origin of the target site.
Because the vulnerability is unauthenticated and network-reachable, any WordPress site running an affected plugin version is exposed to opportunistic phishing campaigns. The CVSS scope is marked as changed, meaning the injected script operates outside the plugin's own trust boundary and can affect the broader WordPress admin session.
Root Cause
The root cause is insufficient input sanitization combined with missing output escaping on three request parameters. Neither WordPress core escaping functions such as esc_html(), esc_attr(), nor wp_kses() are applied to the reflected values. The plugin trusts client-supplied query strings and writes them directly into page markup.
Attack Vector
The attack requires user interaction. An attacker crafts a URL such as one embedding a <script> payload in the idd, order, or post parameter, then delivers it via email, social media, or a compromised third-party site. When an authenticated WordPress administrator or shop manager loads the URL, the payload executes with the privileges of that user's browser session. Post-exploitation actions include stealing authentication cookies, submitting forged administrative requests, injecting persistent backdoors through the WordPress editor, or pivoting to WooCommerce order data. See the Wordfence vulnerability report for additional analysis.
No verified public proof-of-concept code is available at the time of publication. Refer to the WordPress plugin changeset for the sanitization fix.
Detection Methods for CVE-2024-12049
Indicators of Compromise
- HTTP GET or POST requests to plugin endpoints containing <script, javascript:, onerror=, or onload= substrings in the order, post, or idd parameters
- Web server access logs showing URL-encoded XSS payloads such as %3Cscript%3E targeting Woo Ukrposhta pages
- Referer headers from external phishing infrastructure pointing WordPress users to plugin URLs
- Unexpected outbound requests from administrator browser sessions to attacker-controlled hosts following link clicks
Detection Strategies
- Deploy a web application firewall (WAF) ruleset that flags reflected XSS patterns on the three vulnerable parameters
- Correlate WordPress wp-admin session activity with inbound HTTP requests containing script tags in query strings
- Alert on plugin version telemetry showing Woo Ukrposhta <= 1.17.11 still installed after the patch release
Monitoring Recommendations
- Enable verbose HTTP request logging for wp-content/plugins/woo-ukrposhta/ paths and forward logs to a central SIEM
- Monitor administrator account behavior for anomalous configuration changes, plugin installations, or new user creation immediately following outbound link clicks
- Track browser Content Security Policy (CSP) violation reports for inline script executions on WordPress pages
How to Mitigate CVE-2024-12049
Immediate Actions Required
- Upgrade the Woo Ukrposhta plugin to a version later than 1.17.11 that includes the sanitization fix from the referenced plugin changeset
- Audit WordPress administrator and shop manager accounts for unauthorized session activity or configuration drift
- Rotate authentication cookies and force re-authentication for privileged WordPress users after applying the update
Patch Information
The vendor addressed the vulnerability in the plugin repository. Review the WordPress plugin changeset for the specific sanitization commits and consult the Woo Ukrposhta plugin page for the latest release.
Workarounds
- Deactivate and remove the Woo Ukrposhta plugin until the site can be updated to a patched version
- Deploy a WAF rule that blocks requests containing HTML tags or JavaScript event handlers in the order, post, and idd parameters
- Enforce a strict Content Security Policy on WordPress admin pages to prevent execution of inline and untrusted scripts
- Train administrators and shop managers to avoid clicking untrusted links that reference their own WordPress domain with unusual query parameters
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
