Overview
CVE-2025-13813 details a medium severity vulnerability found in Mogu Blog v2 up to version 5.2. This vulnerability relates to broken access control within the Storage Management Endpoint, specifically affecting the handling of files in the /storage/ directory. An attacker could potentially exploit this flaw to bypass authorization checks and gain unauthorized access to sensitive resources.
Published on December 1st, 2025, this vulnerability has a publicly available exploit, increasing the risk for unpatched systems. The vendor has been unresponsive to disclosure attempts.
Technical Details
The vulnerability resides in the inadequate access control mechanisms for the /storage/ endpoint within Mogu Blog v2. Improper validation allows remote attackers to manipulate requests and potentially access or modify stored files without proper authorization. The complexity of exploitation is rated as high, suggesting a need for specific knowledge or techniques to successfully execute the exploit.
The publicly available exploit further details how an attacker can craft malicious requests to bypass authentication checks and interact with the storage management functionalities.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) assigns CVE-2025-13813 a score of 5.6, classifying it as a MEDIUM severity vulnerability. This score considers the following factors:
- Attack Vector: Network (AV:N) – The attack can be launched remotely.
- Attack Complexity: High (AC:H) – Specialized access conditions or extenuating circumstances exist.
- Privileges Required: None (PR:N) – No privileges are required to exploit the vulnerability.
- User Interaction: None (UI:N) – No user interaction is required.
- Scope: Unchanged (S:U) – An exploited vulnerability can only affect resources managed by the same security authority.
- Confidentiality Impact: Partial (C:P) – Some confidential information is disclosed.
- Integrity Impact: Partial (I:P) – Some data can be modified.
- Availability Impact: None (A:N) – There is no impact to availability.
Possible Impact
Successful exploitation of CVE-2025-13813 could lead to:
- Unauthorized Access to Files: Attackers could access sensitive files stored within the blog’s storage directory.
- Data Modification: Malicious actors might be able to modify or delete stored files, potentially disrupting the blog’s functionality or integrity.
- Information Disclosure: Exposure of confidential information stored within the affected storage area.
Mitigation and Patch Steps
Unfortunately, as the vendor has been unresponsive, official patches are currently unavailable. Until an official patch is released, consider the following mitigation steps:
- Implement Web Application Firewall (WAF) Rules: Configure your WAF to detect and block suspicious requests targeting the
/storage/endpoint. Specifically, look for unusual parameter manipulation and unauthorized access attempts. - Review Access Control Configurations: Carefully review the access control mechanisms for the
/storage/directory and ensure that only authorized users and processes have the necessary permissions. Implement stricter validation and authorization checks. - Monitor Logs: Implement robust logging and monitoring to detect any unusual activity or unauthorized access attempts to the
/storage/endpoint. - Consider Migration: If possible, consider migrating to a more actively maintained blogging platform to ensure timely security updates and support.
