CVE-2026-73265 RustFS: Version-specific object reads authorize the non-version action
Attackers can read historical object versions without proper permissions due to incorrect authorization checks in RustFS object storage.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73265?
CVE-2026-73265 is a medium-severity missing authorization vulnerability in rustfs, published on 12 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
RustFS is a distributed object storage system built in Rust. RustFS authorizes explicit versionId reads in GetObject, CopyObject sources, and UploadPartCopy sources with s3:GetObject instead of s3:GetObjectVersion, allowing principals without historical-version permission to disclose known historical object content. This issue is fixed in version 1.0.0-beta.11.
Which versions are affected by CVE-2026-73265?
How do I fix CVE-2026-73265?
No fix has been published for CVE-2026-73265 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73265 being exploited?
There is no known exploitation of CVE-2026-73265 in the wild and no public exploit code.
Sources
Also known as GHSA-3ppv-fx5m-m749.