CVE-2026-22042

HIGH

RustFS < 1.0.0-alpha.79 - Unauthorized IAM Import via Incorrect Action Validation

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.0039
EPSS Percentile 30.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-285 CWE-863
Status published
Products (2)
crates.io/rustfs 0 - 1.0.0-alpha.79crates.io
rustfs/rustfs 1.0.0 alpha1 (49 CPE variants)
Published Jan 08, 2026
Tracked Since Feb 18, 2026