CVE-2026-68482 in Answer
Summary
by MITRE • 10/19/2026
Missing Authorization vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.2.
An unauthenticated or unauthorized user can retrieve the invited-user list associated with a non-public question due to missing visibility authorization checks.
Users are recommended to upgrade to version 2.0.3, which fixes the issue.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/19/2026
The vulnerability identified in Apache Answer versions through 2.0.2 represents a critical failure in access control mechanisms, specifically categorized under CWE-862: Missing Authorization. This flaw allows unauthenticated or unauthorized users to bypass intended security restrictions and retrieve sensitive data that should be restricted based on user roles or question visibility settings. The core technical issue lies within the application's logic for handling invitations associated with questions marked as non-public. In a properly secured system, any request to access resources tied to private or restricted content must verify that the requesting entity possesses the necessary permissions before returning data. However, in this vulnerable implementation, the backend endpoint responsible for listing invited users does not perform adequate checks against the visibility status of the associated question. Consequently, if an attacker knows or can guess the identifier of a non-public question, they can directly query the invitation list without being logged in or possessing any valid session tokens that would normally restrict such access.
From an operational perspective, this vulnerability facilitates information disclosure and potentially aids in further attacks against the platform. By exposing the email addresses or user identifiers of individuals invited to participate in private discussions, attackers gain valuable intelligence about the community structure and potential targets within the application. This data can be leveraged for social engineering campaigns, such as phishing or credential stuffing, where knowing specific usernames increases the success rate of targeted attacks. Furthermore, it violates the principle of least privilege by exposing internal collaboration details to external actors who have no legitimate reason to view them. The impact extends beyond mere privacy concerns; it undermines trust in the platform's ability to maintain confidentiality for private conversations and collaborative projects hosted on Apache Answer.
The attack vector is relatively straightforward, requiring only a single HTTP request to the affected API endpoint with the appropriate question identifier. Since the vulnerability exists at the authorization layer rather than through input validation or injection flaws, traditional web application firewalls may not detect it unless they are specifically configured to monitor for unauthorized access attempts on sensitive endpoints. This makes detection and prevention challenging without direct monitoring of user behavior patterns or implementing strict rate limiting on invitation-related queries. The simplicity of exploitation means that automated scanning tools could easily identify and exploit this weakness across multiple instances if the vulnerability is widespread, leading to large-scale data breaches affecting numerous organizations using Apache Answer for private team collaboration.
To mitigate this risk, immediate action is required by upgrading all affected systems to version 2.0.3 or later, where the missing authorization checks have been implemented. This update ensures that any request to retrieve invited user lists first validates whether the requester has permission to view the associated question based on its visibility settings and their own role within the project. Administrators should also consider implementing additional defensive measures such as robust logging of access attempts to sensitive endpoints, enabling intrusion detection systems to flag anomalous behavior patterns indicative of enumeration attacks. Regular security audits focusing on authorization logic across all API endpoints are recommended to prevent similar oversights in future development cycles. Adhering to secure coding standards that mandate explicit permission checks for every data retrieval operation will significantly reduce the attack surface and enhance overall platform resilience against unauthorized access attempts.