CVE-2026-73265: RustFS: Version-specific object reads authorize the non-version action

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-12 · updated 2026-09-09
Weakness: CWE-862

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.

Affected products

rustfs: before 1.0.0-beta.11

References

https://github.com/rustfs/rustfs/commit/81665617029e5e437ecf9dc70d8dcbbbf80cdbd1
https://github.com/rustfs/rustfs/pull/5142
https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.11
https://github.com/rustfs/rustfs/security/advisories/GHSA-3ppv-fx5m-m749

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