CVE-2024-50488 in Token Login Plugin
Summary
by MITRE • 10/28/2024
Authentication Bypass Using an Alternate Path or Channel vulnerability in yespbs Token Login token-login allows Authentication Bypass.This issue affects Token Login: from n/a through <= 1.0.3.
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Analysis
by VulDB Data Team • 04/06/2026
This vulnerability represents a critical authentication bypass flaw in the yespbs Token Login plugin identified as CVE-2024-50488. The issue stems from improper validation of authentication tokens within the token-login component, allowing unauthorized users to bypass the standard authentication process. The vulnerability exists in versions of the plugin ranging from the initial release through version 1.0.3, indicating a persistent flaw that has not been adequately addressed in the affected codebase. This authentication bypass occurs through an alternate path or channel, meaning that attackers can exploit alternative methods to gain access without properly authenticating through the intended authentication mechanisms. The flaw essentially allows malicious actors to leverage token-based authentication in ways that were not intended by the developers, creating a backdoor access point that undermines the core security posture of the system. This type of vulnerability falls under the CWE-287 category, which specifically addresses authentication bypass issues where alternate authentication paths or channels are improperly validated or secured.
The technical implementation of this vulnerability involves the token-login plugin's failure to properly validate or verify the authenticity of tokens presented during the authentication process. Attackers can potentially manipulate or forge tokens to gain unauthorized access to systems that rely on this plugin for authentication. The flaw likely resides in how the system processes token validation, possibly through insufficient cryptographic verification, improper token expiration handling, or inadequate session management. This allows threat actors to exploit the system through alternate authentication channels without proper authorization. The vulnerability may also be related to improper input validation where tokens are not sufficiently checked for integrity or authenticity before being accepted as valid credentials. According to ATT&CK framework, this vulnerability maps to T1078.004 which covers valid accounts using alternate authentication paths, and potentially T1566.001 which involves spearphishing attachments. The attack vector typically involves an attacker obtaining or generating a valid token and then using it to bypass the standard authentication flow, effectively allowing them to impersonate legitimate users.
The operational impact of this vulnerability is severe as it directly compromises the integrity of the authentication system and potentially exposes sensitive data or system resources to unauthorized access. Organizations relying on the yespbs Token Login plugin for authentication may face significant security risks including data breaches, privilege escalation, and unauthorized system modifications. The vulnerability could enable attackers to gain administrative access to systems, potentially leading to complete system compromise and data exfiltration. This authentication bypass affects not only individual user accounts but could also impact entire organizational systems that depend on the plugin for secure access control. The impact extends beyond immediate unauthorized access as it undermines trust in the authentication infrastructure and may require complete system re-evaluation and remediation. The vulnerability's persistence across multiple versions indicates a fundamental flaw in the plugin's design that requires immediate attention to prevent exploitation. Organizations using affected versions must consider this vulnerability as a critical threat requiring immediate remediation and potentially a complete re-assessment of their authentication security posture.
Mitigation strategies for CVE-2024-50488 should include immediate patching of the yespbs Token Login plugin to the latest version that addresses the authentication bypass issue. Organizations should also implement additional security controls such as monitoring for unusual authentication patterns, implementing multi-factor authentication as a compensating control, and conducting thorough security audits of all authentication mechanisms. Network segmentation and access controls should be reviewed to limit the potential impact of successful exploitation. The recommended approach includes disabling the vulnerable plugin until a patched version is deployed, implementing robust token validation mechanisms, and ensuring proper cryptographic practices are followed in token generation and verification. Security teams should also consider implementing automated vulnerability scanning to detect similar issues in other authentication components. According to industry best practices and NIST guidelines, organizations should also perform regular security assessments and maintain up-to-date threat intelligence to identify and address similar vulnerabilities. Additionally, implementing proper logging and monitoring for authentication events can help detect exploitation attempts and provide forensic evidence for incident response activities.