CVE-2025-63291 is a critical authorization vulnerability affecting Alteryx Server versions 2022.1.1.42654 and 2024.1. The issue arises because the server uses MongoDB object IDs as unique identifiers for data requested via its API but does not verify whether the authenticated user has the necessary permissions to access the data associated with those IDs. This lack of authorization checks allows an authenticated user to specify arbitrary MongoDB object IDs in API requests and retrieve data belonging to other users. The exposed data can include highly sensitive information such as administrative API keys and private studio API keys, which could further compromise the environment if leaked. The vulnerability does not appear to allow unauthenticated access, but it enables horizontal privilege escalation, allowing users to access data beyond their privileges. No CVSS score has been assigned yet, and no public exploits or patches are currently known. The vulnerability was published on November 14, 2025, with the CVE reserved on October 27, 2025. The root cause is insufficient access control validation on API requests referencing MongoDB object IDs. This flaw could be exploited by attackers who have valid credentials but seek to escalate their access to sensitive administrative credentials and data. The impact includes potential data breaches, unauthorized access to administrative functions, and compromise of API keys that could be used for further attacks or lateral movement within the environment. The vulnerability affects organizations using the specified Alteryx Server versions, particularly those relying on the server for data analytics and automation workflows that involve sensitive data. Given the nature of the data exposed, the vulnerability threatens confidentiality and integrity, with possible downstream effects on availability if administrative keys are misused. The lack of patches or mitigations currently available increases the urgency for organizations to implement compensating controls and monitor for suspicious API activity.

For European organizations, the impact of CVE-2025-63291 is significant due to the potential exposure of sensitive administrative API keys and private studio API keys. These keys can grant attackers elevated privileges, enabling unauthorized access to critical data and administrative functions within Alteryx Server environments. This could lead to data breaches involving personal data protected under GDPR, resulting in regulatory penalties and reputational damage. Organizations in sectors such as finance, healthcare, government, and data analytics—where Alteryx Server is commonly used—are at heightened risk. The compromise of administrative keys could also facilitate further attacks, including lateral movement within networks, data manipulation, or disruption of data workflows, impacting business continuity. The vulnerability's ease of exploitation by any authenticated user increases the threat surface, especially in environments with many users or weak credential management. Additionally, the exposure of private studio API keys could allow attackers to impersonate legitimate users or automate malicious activities. The absence of known exploits in the wild provides a window for proactive defense, but the lack of patches necessitates immediate mitigation efforts. Overall, the vulnerability threatens confidentiality and integrity of critical data and credentials, with potential cascading effects on availability and compliance obligations for European organizations.

European organizations using Alteryx Server versions 2022.1.1.42654 and 2024.1 should immediately implement the following mitigations: 1) Restrict API access to only trusted and necessary users, enforcing the principle of least privilege. 2) Conduct thorough access reviews to ensure users have appropriate permissions and remove unnecessary accounts or privileges. 3) Monitor API request logs for unusual patterns, such as requests specifying unexpected MongoDB object IDs or accessing data outside normal user scopes. 4) Implement network segmentation and firewall rules to limit access to Alteryx Server APIs from untrusted networks or endpoints. 5) Use multi-factor authentication (MFA) to reduce the risk of compromised credentials being used to exploit this vulnerability. 6) Engage with Alteryx support or vendor channels to obtain patches or updates as soon as they become available and plan for rapid deployment. 7) Consider deploying Web Application Firewalls (WAFs) or API gateways that can enforce additional authorization checks or detect anomalous API usage. 8) Educate users and administrators about the risks of this vulnerability and the importance of credential security. 9) Prepare incident response plans to quickly address any detected exploitation attempts. These steps go beyond generic advice by focusing on access control tightening, monitoring for specific attack vectors, and preparing for patch management in the absence of immediate fixes.