CVE-2025-69602 in 66biolinks
Summary
by MITRE • 01/28/2026
A session fixation vulnerability exists in 66biolinks v62.0.0 by AltumCode, where the application does not regenerate the session identifier after successful authentication. As a result, the same session cookie value is reused for users logging in from the same browser, allowing an attacker who can set or predict a session ID to potentially hijack an authenticated session.
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Analysis
by VulDB Data Team • 02/10/2026
The session fixation vulnerability identified in 66biolinks v62.0.0 represents a critical weakness in the application's authentication mechanism that directly undermines user session security. This vulnerability falls under the category of CWE-384, which specifically addresses session fixation issues where applications fail to properly regenerate session identifiers upon successful authentication. The flaw exists within the AltumCode developed web application that manages biological data links and analytics, creating a pathway for malicious actors to exploit the session management process. The vulnerability is particularly concerning given that the application handles sensitive biological information and user data, making it an attractive target for cybercriminals seeking unauthorized access to research data and user accounts.
The technical implementation of this vulnerability stems from the application's failure to execute proper session regeneration after user authentication. When a user successfully logs into the 66biolinks platform, the system should generate a new, unpredictable session identifier to replace the existing one. However, the current implementation allows the same session cookie value to persist across authentication events, meaning that if an attacker can either set a specific session ID or predict a valid session token, they can maintain access to a user's authenticated session. This behavior violates fundamental security principles outlined in the OWASP Top Ten and aligns with the ATT&CK technique T1563.002, which covers credentials from password reuse and session hijacking. The vulnerability enables attackers to leverage session fixation attacks by establishing a known session ID before user authentication, then taking advantage of the application's failure to regenerate session tokens.
The operational impact of this vulnerability extends beyond simple unauthorized access, creating potential risks for data integrity and confidentiality within the biological research environment. An attacker who successfully hijacks a session could gain access to sensitive biological datasets, research findings, and user account information, potentially compromising ongoing research projects and intellectual property. The vulnerability affects the entire user base of 66biolinks v62.0.0, as any authenticated user session could be compromised through this flaw. The attack surface is particularly broad since session cookies are typically stored in browsers and can be accessed by attackers who have gained access to a user's machine or network. This vulnerability also creates risks for business continuity, as unauthorized access could lead to data manipulation, research data theft, or disruption of legitimate research activities that depend on the platform's reliability.
Mitigation strategies for this session fixation vulnerability must address both immediate remediation and long-term security improvements. The primary fix involves implementing proper session regeneration upon successful authentication, ensuring that each login event generates a new, cryptographically secure session identifier. This approach directly addresses the CWE-384 category of session fixation vulnerabilities and aligns with NIST SP 800-63B guidelines for digital identity management. Organizations should also implement additional security controls such as secure session cookie attributes, including HttpOnly, Secure, and SameSite flags to prevent client-side script access and cross-site request forgery. The implementation should follow the principle of least privilege and ensure that session tokens are sufficiently random and unpredictable to prevent guessing attacks. Regular security testing and code reviews should be conducted to identify similar session management flaws in other components of the application, while also monitoring for any signs of exploitation attempts. The vulnerability requires immediate attention as it represents a fundamental breakdown in the application's authentication security model and could enable attackers to maintain persistent access to the platform's resources.