CVE-2025-28103 in flaskBlog
Summary
by MITRE • 04/21/2025
Incorrect access control in laskBlog v2.6.1 allows attackers to arbitrarily delete user accounts via a crafted request.
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Analysis
by VulDB Data Team • 05/25/2025
The vulnerability identified as CVE-2025-28103 represents a critical access control flaw within the laskBlog v2.6.1 web application that fundamentally undermines the security posture of user account management. This issue manifests as an insufficient authorization mechanism that fails to properly validate user privileges before executing destructive operations. The vulnerability stems from improper input validation and lack of proper authentication checks within the application's account deletion endpoint, allowing any remote attacker to craft malicious requests that bypass normal access controls and execute unauthorized account removal operations.
The technical implementation of this vulnerability aligns with CWE-285, which addresses improper authorization within software systems. The flaw occurs when the application fails to verify that the requesting user possesses the necessary administrative privileges or ownership rights before processing account deletion requests. This weakness enables attackers to manipulate HTTP requests or API calls to target specific user accounts without proper authentication. The vulnerability is particularly concerning because it operates at the application layer, where attackers can exploit it through standard network communication protocols without requiring physical access or elevated system privileges. The lack of proper session management and token validation further compounds the issue, creating an attack surface where even unauthenticated users can leverage the flaw to execute arbitrary account deletion operations.
From an operational impact perspective, this vulnerability poses significant risks to both individual users and the overall platform integrity. Attackers can systematically target user accounts to disrupt service availability, conduct account takeovers, or implement denial-of-service attacks against legitimate users. The potential for mass account deletion creates cascading effects that can compromise user data, destroy personal content, and undermine user trust in the application. Organizations relying on laskBlog v2.6.1 may face regulatory compliance issues, data loss incidents, and reputational damage when such vulnerabilities are exploited in the wild. The vulnerability also enables attackers to perform reconnaissance activities by testing account existence and identifying valid user targets before executing more sophisticated attacks.
Security professionals should implement multiple mitigation strategies to address this vulnerability effectively. Immediate patching of the application to version 2.6.2 or later is essential, as this update likely contains the necessary authorization controls and input validation improvements. Network-level mitigations should include implementing web application firewalls that can detect and block suspicious deletion requests, particularly those lacking proper authentication headers or originating from unusual IP addresses. The application should enforce strict rate limiting on account management operations and implement comprehensive logging of all deletion activities for audit purposes. Additionally, organizations should conduct thorough security assessments of their web applications to identify similar authorization flaws that may exist in other endpoints. The mitigation approach should align with ATT&CK technique T1078 which addresses valid accounts and privilege escalation, ensuring that account deletion operations require proper authentication tokens and role-based access controls. Regular security testing including penetration testing and vulnerability scanning should be implemented to prevent similar issues from emerging in future versions of the application.