CVSS 4.0
5.7 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:PCVE-2026-22042
Medium (5.7) in rustfs rustfs. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in rustfs 1.0.0-alpha.79.
RustFS is a distributed object storage system built in Rust. Prior to version 1.0.0-alpha.79, he `ImportIam` admin API validates permissions using `ExportIAMAction` instead of `ImportIAMAction`, allowing a principal with export-only IAM permissions to perform import operations. Since importing IAM data performs privileged write actions (creating/updating users, groups, policies, and service accounts), this can lead to unauthorized IAM modification and privilege escalation. Version 1.0.0-alpha.79 fixes the issue.
Severity
CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-863, CWE-285
- Published
- Modified
- Record from
- the NVD, synced
Affected
- rustfs:rustfs
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-vcwh-pff9-64cc | crates.io | rustfs | <1.0.0-alpha.79 | 1.0.0-alpha.79 |