CVE-2026-85663

9.8

aimhubio · aim

The Aim remote tracking server contains a critical authentication bypass vulnerability that allows unauthenticated attackers to execute arbitrary methods and manipulate experiment data.

Executive summary

A critical authentication bypass in the Aim tracking server enables unauthenticated remote attackers to perform unauthorized operations, including data theft and experiment deletion.

Vulnerability

The vulnerability stems from a failure to perform authentication checks on the remote tracking server, allowing unauthenticated requests to invoke arbitrary methods via the getattr function without proper allowlist validation. This flaw enables attackers to instantiate system resources and interact with the underlying repository directly.

Business impact

The ability for an unauthenticated actor to read experimental data or delete runs poses a significant risk to the integrity and confidentiality of research projects. Given the CVSS score of 9.8, this vulnerability is classified as critical, as it provides a direct path for unauthorized access to sensitive machine learning experiment tracking data and potential disruption of development workflows.

Remediation

Immediate Action: Update the aimhubio aim package to the latest available version as soon as a patch is released by the vendor.

Proactive Monitoring: Review application access logs for unusual POST requests directed at the tracking API endpoints and monitor for unexpected modifications to experiment repositories.

Compensating Controls: Deploy a Web Application Firewall (WAF) rule to restrict access to the tracking server endpoints, specifically blocking unauthorized POST requests to the tracking router, until the software can be patched.

Exploitation status

Public Exploit Available: Unknown

Analyst recommendation

This vulnerability represents an extreme risk to any organization hosting Aim tracking servers. Due to the ease of exploitation and the potential for total loss of research data, security teams must prioritize restricting network access to these servers immediately while awaiting the official vendor patch. Failure to address this flaw could lead to complete compromise of experiment data integrity.

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Sources

Originally found and disclosed by George Chen, per the CVE Program record.