CVE-2026-54533 vantage6 node has an Improper Access Control issue
Malicious algorithms can access other algorithms' input and output files due to improper access control in vantage6 nodes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54533?
CVE-2026-54533 is a medium-severity missing authorization vulnerability in vantage6, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
vantage6 is an open-source infrastructure for privacy preserving analysis. Prior to version 5.0.0, malicious algorithms can potentially access other algorithms input and output files. Version 5.0.0 fixes the issue. As a workaround, verify and restrict the algorithm containers that are allowed to run on the node.
Weakness: CWE-284
Which versions are affected by CVE-2026-54533?
3 open source packages ship an affected version, including vantage6.
| Package | Affected | Fixed in |
|---|---|---|
vantage6 PyPI | All versions | 5.0.0 |
vantage6 PyPI | All versions | 5.0.0 |
vantage6 PyPI | All versions | 5.0.0 |
How do I fix CVE-2026-54533?
Upgrade vantage6 to 5.0.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-54533 being exploited?
There is no known exploitation of CVE-2026-54533 in the wild and no public exploit code.
Sources
Also known as GHSA-x9f6-9rvm-mmrg, PYSEC-2026-3401.