CVE-2026-54533: vantage6 Node Improper Access Control Vulnerability
Summary
CVE-2026-54533: vantage6 node has an Improper Access Control issue. Affects vantage6 versions < 5.0.0. Fixed in 5.0.0. How to fix ↓
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Background
vantage6 is an open-source framework designed for secure and privacy-preserving data analysis across distributed environments. It enables users to run algorithms on decentralized data while ensuring that sensitive information remains protected. However, the framework is susceptible to an improper access control issue, which can lead to unauthorized access to algorithm input and output files.
Vulnerability Detail
The vulnerability arises from insufficient access controls within the vantage6 node, allowing malicious algorithms to potentially access the input and output files of other algorithms. This could lead to data leakage and unauthorized manipulation of sensitive information, posing significant risks to data privacy and security.
How To Fix
Latest published version: 5.0.3 as of 22 Oct 2026
pip install --upgrade "vantage6==5.0.3"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
5.0.0
This is the first release that contains the fix.
pip install --upgrade "vantage6==5.0.0"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, verify and restrict the algorithm containers that are allowed to run on your node. Detailed instructions can be found in the vantage6 security documentation at https://docs.vantage6.ai/usage/running-the-node/security.
Conclusion
The improper access control vulnerability in vantage6 poses significant risks to data privacy and security. Users are advised to update to the latest version and implement recommended workarounds to mitigate potential threats.
See every vulnerability recorded for vantage6 →
FAQ
The vulnerability is an improper access control issue that allows unauthorized access to algorithm input and output files.
Malicious algorithms could access sensitive data, leading to data leakage and unauthorized manipulation.
You can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without any signup.
Ensure you update to version 5.0.0 or later and restrict the algorithm containers that can run on your node.
The CVSS score for this vulnerability is 6.9, indicating a moderate level of risk.
References
Related vulnerabilities
Recent vulnerabilities recorded for vantage6.
