Overview
A significant security vulnerability, identified as CVE-2025-11127, has been discovered in the Mstoreapp Mobile App WordPress plugin (versions up to 2.08) and Mstoreapp Mobile Multivendor plugin (versions up to 9.0.1). This flaw allows unauthenticated attackers to retrieve valid user sessions simply by knowing a user’s email address. This poses a serious risk to website security and user data.
Technical Details
The vulnerability lies in the improper handling of AJAX actions within the Mstoreapp plugins. Specifically, the plugins fail to adequately verify the identity of users when processing AJAX requests. This allows an unauthenticated user to craft a malicious request that, when supplied with a known email address, retrieves a valid session token associated with that user. The attacker can then use this session token to impersonate the victim and gain unauthorized access to their account.
The vulnerable code is related to the authentication process that is triggered via AJAX calls. The lack of proper input validation and authentication checks before generating or retrieving a session allows the attacker to bypass security measures.
CVSS Analysis
As of the publication of this article, the Common Vulnerability Scoring System (CVSS) score for CVE-2025-11127 is currently N/A. This is because the official score has not yet been determined. However, given the nature of the vulnerability, which allows for complete account takeover, it is anticipated that the CVSS score will be high, indicating a critical severity.
The severity is marked as N/A due to the CVSS score being unavailable. However, the impact suggests high severity is likely.
Possible Impact
The potential impact of this vulnerability is severe. An attacker exploiting CVE-2025-11127 could:
- Gain complete control over user accounts.
- Access sensitive user data, including personal information, order history, and payment details.
- Modify user profiles and settings.
- Perform actions on behalf of the compromised user.
- Potentially compromise the entire WordPress website if user roles include administrative privileges.
Mitigation or Patch Steps
To mitigate the risk associated with CVE-2025-11127, it is strongly recommended to take the following steps:
- Update the Plugin: Upgrade the Mstoreapp Mobile App WordPress plugin to the latest available version, which should include a fix for this vulnerability. Similarly, upgrade the Mstoreapp Mobile Multivendor plugin to a patched version. Check the plugin developer’s website or the WordPress plugin repository for updates.
- Disable the Plugin (If No Update Available): If an update is not immediately available, consider temporarily disabling the Mstoreapp plugin to prevent potential exploitation until a patched version is released.
- Monitor for Suspicious Activity: Keep a close watch on your website’s logs for any unusual or suspicious activity, such as unauthorized account access attempts.
- Implement a Web Application Firewall (WAF): Deploy a WAF with rules designed to detect and block common attack patterns, including those targeting AJAX-based vulnerabilities.
