CVE-2026-22042HIGH 8.8EPSS p30.8%

CVE-2026-22042CVE-2026-22042

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.39% probability of exploitation · percentile 30.8% · 2026-06-18T12:00:27Z
Published2026-01-08
Last modified2026-01-15

Underlying weaknesses· 2

CWE-285CWE-863

References

  1. https://github.com/rustfs/rustfs/security/advisories/GHSA-vcwh-pff9-64cc
  2. https://github.com/rustfs/rustfs/security/advisories/GHSA-vcwh-pff9-64cc

2

TypeTargetConfidenceTier
WeaknessImproper Authorizationcwe-2850%live
WeaknessIncorrect Authorizationcwe-8630%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.