CVE-2026-22042
Last modified
CVE-2026-22042 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS: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:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Rustfs | Rustfs | 1.0.0 | Alpha1 |
References
- https://github.com/rustfs/rustfs/security/advisories/GHSA-vcwh-pff9-64ccExploit, Vendor Advisory
- https://github.com/rustfs/rustfs/security/advisories/GHSA-vcwh-pff9-64ccExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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